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A Simple Sensor Server Using Cy8ckit-062-wifi-bt

Made by MotooTanaka / Sensors

About the project

A CY8CKIT-062-WiFi-BT ModusToolbox project, using BME280 sensor module.

Project info

Difficulty: Moderate

Platforms: Cypress

Estimated time: 1 week

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

	Cy8ckit-062-wifi-bt Psoc 6 Pioneer Kit	x 1
	BME280 Sensor Module Some jumper wires and a bread-board	x 1

Software apps and online services

	ModusToolbox 2.2
	Cygwin Need C compiler and Bash
	Tera Term
	Google Chrome A web browser which work on your PC

Story

Preface

Although submitting to “The Great PSoC 6 Design Challenge”,

this project is not a great project.

But I hope that this can give some hints for newcomers of

PSoC 6 and/or ModusToolbox.

This program uses a BME280 sensor module as data source via I2C interface

and display Temperature, Humidity, Pressure in a Web Browser.

A onboard LED can be toggled by using the “Toggle LED” button,

and the status of the LED will be also reflected with color Red/Black.

Since this project is using Wi-Fi connection, the sensor and LED can be accessed

from a PC or an iPhone. (I have not tried with an Android but hopefully it will also work)

To build the project,

(1) Create a new project from ModusToolbox Template Application AnyCloud_HTTPS_Server

(2) Replace the following files

main.c

secure_http_server.h

secure_http_server.c

generate_ssl_certs.sh

(3) Add the following files to the project

html.h

i2c_utils.h

i2c_utils.c

bme280.h

bme280.c

(4) Modify secure_http_server.h for

WIFI_SSID

WIFI_PASSSED

(5) Generate certifications (cygwin)

Run generate_ssl_certs.sh

(6) compile ssl2c.c (cygwin)

$ cc ssl2c.c -o ssl2c

(7) Convert certifications into C strings filse (cygwin)

$ ssl2c s3.local.crt local_crt.h

$ ssl2c s3.local.key local_key.h

$ ssl2c rootCA.crt rootCA_crt.h

(8) Copy and paste the contents of local_crt.h in the secure_keys.h keySERVER_CERTIFICATE_PEM definition

(9) Copy and paste the contents of local_key.h in the secure_keys.h keySERVER_PRIVATE_KEY_PEM definition

(10) Copy and paste the contents of rootCA_crt in the secure_keys.h keyCLIENT_ROOTCA_PEM definition

(11) compile html2c.c (cygwin)

$ cc html2c.c -o html2c

(12) Convert test.html to test_html.h

$ html2c test.html test_html.h

(13) Copy and paste the contents of test_html.h in the html.h HTTPS_STARTUP_WEBPAGE definition

(14) Build and Run the project.

Schematics, diagrams and documents

Connection of CY8CKIT-062-WiFi-BT and BME280 sensor module

Connection diagram between CY8CKIT-062-WiFi-BT and BME280 Sensor module

A Simple Sensor Server.pdf

A brief pdf explanation of how to prepare/build/run the project

Code

html2c.c

A cygwin program to convert a HTML file into C strings to be placed in the html.h. Note: This is not a part of the application, but to be used to generate C strings files.

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define EOL '\n'
#define CR  '\r'
#define SPACE ' '
#define TAB '\t'
#define DOUBLE_QUOTE '\"'
#define BACK_SLASH '\\'
#define STR_BUF_LEN 256
char str[STR_BUF_LEN+1] ;

FILE *ifp ;
FILE *ofp ;

int line_number = 0 ;


FILE *efopen(char *filename, char *mode)
{
	FILE *fp ;
	fp = fopen(filename, mode) ;
	if (fp == 0) {
		fprintf(stderr, "Can not open %s for %s\n",
			filename, mode) ;
		exit(1) ;
	}
	return( fp ) ;
}

void get_opt(int argc, char *argv[]) 
{
	if ((argc > 1) && strcmp(argv[1], "-")) {
		ifp = efopen(argv[1], "r") ;
	} else {
		ifp = stdin ;
	}
	if ((argc > 2) && strcmp(argv[2], "-")) {
		ofp = efopen(argv[2], "w") ;
	} else {
		ofp = stdout ;
	}
}

int get_line(void)
{
	int index = 0 ;
	int c ;
	while((c = fgetc(ifp)) != EOF) {
		if (c == EOL) {
			break ;
		} else if (c == CR) {
			/* ignore CR */
		} else {
			str[index] = c ;
			index++ ;
			if (index >= STR_BUF_LEN) {
				break ;
			}
		}
	}
	str[index] = 0 ;
	return( index ) ;
}

void print_html(void)
{
	int i = 0 ;
	if (line_number++) {
		fprintf(ofp, " \\\n") ;
	}

	while((str[i] == SPACE)||(str[i] == TAB)) {
		fputc(str[i], ofp) ;
		i++ ;
	}
	fprintf(ofp, "\"") ;
	while(str[i]) {
		switch(str[i]) {
		case DOUBLE_QUOTE:
			fprintf(ofp, "\\\"") ;
			break ;
		case BACK_SLASH:
			fprintf(ofp, "\\") ;
			break ;
		default:
			fputc(str[i], ofp) ;
			break ;
		}
		i++ ;
		if (i >= STR_BUF_LEN) {
			break ;
		}
	}
	fputc('\"', ofp) ;
}

void clean_up(void)
{
	fclose(ofp) ;
	fclose(ifp) ;
}

void do_it(void)
{
	while(get_line()) {
		print_html() ;
	}
	fprintf(ofp, "\n") ;
}

int main(int argc, char *argv[])
{
	get_opt(argc, argv) ;

	do_it() ;

	clean_up() ;

	exit(0) ;
}

i2c_utils.h

I2C utility API to hide the difficulty of PDL API.

/*
 * i2c_utils.h
 *
 *  Created on: 2020/12/23
 *      Author: Motoo Tanaka
 */

#ifndef SOURCE_I2C_UTILS_H_
#define SOURCE_I2C_UTILS_H_
/* FreeRTOS header file */
#include <FreeRTOS.h>
#include <task.h>
#include "cybsp.h"
#include "cyhal_gpio.h"

void i2c_sensor_task(void *arg);

cy_rslt_t init_i2c_master(void) ;
void i2c_set_slave_address(uint8_t address) ;

cy_rslt_t i2c_read_byte(uint8_t *value) ;
cy_rslt_t i2c_read_bytes(uint8_t values[], int num) ;
cy_rslt_t i2c_write_byte(uint8_t value) ;
cy_rslt_t i2c_write_bytes(uint8_t values[], int num) ;
cy_rslt_t i2c_read_regs(uint8_t reg_address, uint8_t *value, int num) ;
cy_rslt_t i2c_write_regs(uint8_t reg_address, uint8_t *value, int num) ;

#endif /* SOURCE_I2C_UTILS_H_ */

bme280.c

bme280 interface API program

#include "bme280.h"
#include "i2c_utils.h"

typedef int32_t  BME280_S32_t ;
typedef uint32_t BME280_U32_t ;
typedef long long signed int BME280_S64_t ;

#define REG_HUM_LSB    0xFE
#define REG_HUM_MSB    0xFD
#define REG_TEMP_XLSP  0xFC
#define REG_TEMP_LSB   0xFB
#define REG_TEMP_MSB   0xFA
#define REG_PRESS_XLSB 0xF9
#define REG_PRESS_LSB  0xF8
#define REG_PRESS_MSB  0xF7
#define REG_CONFIG     0xF5
#define REG_CTRL_MEAS  0xF4
#define REG_STATUS     0xF3
#define REG_CTRL_HUM   0xF2
#define REG_RESET      0xE0
#define REG_ID         0xD0

#define REG_CALIB41    0xF0
#define REG_CALIB40    0xEF
#define REG_CALIB39    0xEE
#define REG_CALIB38    0xEE
#define REG_CALIB37    0xEC
#define REG_CALIB36    0xEB
#define REG_CALIB35    0xEA
#define REG_CALIB34    0xE9
#define REG_CALIB33    0xE8
#define REG_CALIB32    0xE7
#define REG_CALIB31    0xE6
#define REG_CALIB30    0xE5
#define REG_CALIB29    0xE4
#define REG_CALIB28    0xE3
#define REG_CALIB27    0xE2
#define REG_CALIB26    0xE1
#define REG_CALIB25    0xA1
#define REG_CALIB24    0xA0
#define REG_CALIB23    0x9F
#define REG_CALIB22    0x9E
#define REG_CALIB21    0x9D
#define REG_CALIB20    0x9C
#define REG_CALIB19    0x9B
#define REG_CALIB18    0x9A
#define REG_CALIB17    0x99
#define REG_CALIB16    0x98
#define REG_CALIB15    0x97
#define REG_CALIB14    0x96
#define REG_CALIB13    0x95
#define REG_CALIB12    0x94
#define REG_CALIB11    0x93
#define REG_CALIB10    0x92
#define REG_CALIB09    0x91
#define REG_CALIB08    0x90
#define REG_CALIB07    0x8F
#define REG_CALIB06    0x8E
#define REG_CALIB05    0x8D
#define REG_CALIB04    0x8C
#define REG_CALIB03    0x8B
#define REG_CALIB02    0x8A
#define REG_CALIB01    0x89
#define REG_CALIB00    0x88

/** Trimming parameters */
/* temperature */
#define REG_T1_LSB 0x88
#define REG_T1_MSB 0x89
#define REG_T2_LSB 0x8A
#define REG_T2_MSB 0x8B
#define REG_T3_LSB 0x8C
#define REG_T3_MSB 0x8D
/* pressure */
#define REG_P1_LSB 0x8E
#define REG_P1_MSB 0x8F
#define REG_P2_LSB 0x90
#define REG_P2_MSB 0x91
#define REG_P3_LSB 0x92
#define REG_P3_MSB 0x93
#define REG_P4_LSB 0x94
#define REG_P4_MSB 0x95
#define REG_P5_LSB 0x96
#define REG_P5_MSB 0x97
#define REG_P6_LSB 0x98
#define REG_P6_MSB 0x99
#define REG_P7_LSB 0x9A
#define REG_P7_MSB 0x9B
#define REG_P8_LSB 0x9C
#define REG_P8_MSB 0x9D
#define REG_P9_LSB 0x9E
#define REG_P9_MSB 0x9F
/* humidity */
#define REG_H1     0xA1
#define REG_H2_LSB 0xE1
#define REG_H2_MSB 0xE2
#define REG_H3     0xE3
#define REG_H4     0xE4
#define REG_H5     0xE5
#define REG_H6     0xE7

#define BME280_I2C_ADDRESS 0x76

static uint8_t BME280_i2c_address ;
static BME280_S32_t t_fine ;

static uint16_t dig_T1 ;
static int16_t  dig_T2 ;
static int16_t  dig_T3 ;
static uint16_t dig_P1 ;
static int16_t  dig_P2 ;
static int16_t  dig_P3 ;
static int16_t  dig_P4 ;
static int16_t  dig_P5 ;
static int16_t  dig_P6 ;
static int16_t  dig_P7 ;
static int16_t  dig_P8 ;
static int16_t  dig_P9 ;
static uint8_t  dig_H1 ;
static int16_t  dig_H2 ;
static uint8_t  dig_H3 ;
static int16_t  dig_H4 ;
static int16_t  dig_H5 ;
static int8_t   dig_H6 ;

/*
 * Register description
 * 0xD0 "id"
 *  chip identification number chip_id[7:0], which is 0x60
 *
 * 0xE0 "reset"
 *  Software reset register, writing 0xB6 causes complete power-on-reset.
 *
 * 0xF2 "ctrl_hum"
 *  Specifies the humidity data acquision options.
 *  Note: Changes to this register only become effective after a write
 *  operaion to "ctrl_meas".
 * bit[2:0] osrs_h[2:0] Controls oversampling of humidity data.
 *  000: Skipped (output set to 0x8000)
 *  001: oversampling x1
 *  010: oversampling x2
 *  011: oversampling x4
 *  100: oversampling x8
 *  101, others, oversampling x16
 *
 * 0xF3 "status"
 * bit[3] measuring[0] Automatically set to '1' during conversion
 *        and back to '0' when done
 * bit[0] im_update[0] Automatically set to '1' during NVM data copy
 *        and back to '0' when done
 *
 * 0xF4 "ctrl_meas"
 *  Specifies the pressure and temperature data acquision options.
 *  Note: This register needs to be written after canging "ctrl_hum" to take effect.
 * bit[7:5] osrs_t[2:0] Controls oversampling of temperature data
 *  bit value is similar to osrs_h (except 000 output set to 0x80000)
 * bit[4:2] osrs_p[2:0] Controls oversampling of pressure data
 *  bit value is similar to osrs_h (except 000 output set to 0x80000)
 * bit[1:0] mode[1:0] Controls the sensor mode.
 *  00: Sleep mode
 *  01: Forced mode
 *  10: Forced mode
 *  11: Normal mode
 *
 * 0xF5 "config"
 *  Specifies the rate, filter and interface options.
 *  Writes to "config" in normal mode may be ignored.
 *  In sleep mode writes are not ignored.
 * bit[7:5] t_sb[2:0] Controls inactive duration t_standby in normal mode.
 * 000:    0.5 [ms]
 * 001:   62.5 [ms]
 * 010:  125   [ms]
 * 011:  250   [ms]
 * 100:  500   [ms]
 * 101: 1000   [ms]
 * 110:   10   [ms]
 * 111:   20   [ms]
 * bit[4:2] filter[2:0] Controls the time constant of the IIR filter.
 * 000: Filter off
 * 001:  2
 * 010:  4
 * 011:  8
 * 100, others: 16
 *
 * 0xF7 .. 0xF9 "press" (_msb, _lsb, _xlsb)
 * 0xF7 bit[7:0] press_msb[7:0]   MSB part up[19:12]
 * 0xF8 bit[7:0] press_lsb[7:0]   LSB part  up[11:4]
 * 0xF9 bit[7:4] press_xlsb[3:0] XLSB part   up[3:0]
 *
 * 0xFA .. 0xFC "temp" (_msb, _lsb, _xlsb)
 * 0xFA bit[7:0] temp_msb[7:0]   MSB part ut[19:12]
 * 0xFB bit[7:0] temp_lsb[7:0]   LSB part  ut[11:4]
 * 0xFC bit[7:4] temp_xlsp[3:0] XLSB part   ut[3:0]
 *
 * 0xFD .. 0xFE "hum" (_msb, _lsb)
 * 0xFD bit[7:0] hum_msb[7:0]    MSB part uh[15:8]
 * 0xFE bit[7:0] hum_lsb[7:0]    LSB part  uh[7:0]
 */
 /*
  * Compensation parameter storage, naming and data type
  * Register addr,  Register content,    Data type
  * 0x88/0x89,      dig_T1[7:0]/[15:8],  unsigned short
  * 0x8A/0x8B,      dig_T2[7:0]/[15:8],    signed short
  * 0x8C/0x8D,      dig_T3[7:0]/[15:8],    signed short
  * 0x8E/0x8F,      dig_P1[7:0]/[15:8],  unsigned short
  * 0x90/0x91,      dig_P2[7:0]/[15:8],    signed short
  * 0x92/0x93,      dig_P3[7:0]/[15:8],    signed short
  * 0x94/0x95,      dig_P4[7:0]/[15:8],    signed short
  * 0x96/0x97,      dig_P5[7:0]/[15:8],    signed short
  * 0x98/0x99,      dig_P6[7:0]/[15:8],    signed short
  * 0x9A/0x9B,      dig_P7[7:0]/[15:8],    signed short
  * 0x9C/0x9D,      dig_P8[7:0]/[15:8],    signed short
  * 0x9E/0x9F,      dig_P9[7:0]/[15:8],    signed short
  * 0xA1,           dig_H1[7:0],         unsigned char
  * 0xE1/0xE2,      dig_H2[7:0]/[15:8],    signed short
  * 0xE3,           dig_H3[7:0],         unsigned char
  * 0xE4/0xE5[3:0], dig_H4[11:4]/[3:0]  signed short
  * 0xE5[7:4]/0xE6, dig_H5[3:0]/[11:4]  signed short
  * 0xE7,           dig_H6[7:0],        signed char
  */

void BME280_read_regs(uint8_t addr, uint8_t *data, int len)
{
    i2c_set_slave_address(BME280_i2c_address) ;
    i2c_read_regs(addr, data, len) ;
}

void BME280_write_regs(uint8_t addr, uint8_t *data, int len)
{
    i2c_set_slave_address(BME280_i2c_address) ;
    i2c_write_regs(addr, data, len) ;
}

void BME280_init(void)
{
  uint8_t data[18] ;

    BME280_i2c_address = BME280_I2C_ADDRESS ;
    data[0] = 0x03 ; /* Humidity oversampling x4 */
    BME280_write_regs(REG_CTRL_HUM, data, 1) ;

//    BME280_read_regs(REG_CTRL_HUM, data, 1) ;
//    printf("CTRL_HUM: 0x%02x ", data[0]) ;

    data[0] = (0x3 << 5) /* temp oversample x4 */
            | (0x3 << 2) /* pres oversample x4 */
            | (0x00)      /* Sleep Mode */
            ;
    BME280_write_regs(REG_CTRL_MEAS, data, 1) ;

//    BME280_read_regs(REG_CTRL_MEAS, data, 1) ;
//    printf("CTRL_MEAS: 0x%02X\n\r", data[0]) ;

    data[0] = (0x4 << 5) /* standby 500ms */
            | (0x0 << 2) /* filter off */
            | (0x0)      /* spi 4wire mode */
            ;
    BME280_write_regs(REG_CONFIG, data, 1) ;


    /* read dig_T regs */
    BME280_read_regs(REG_T1_LSB, data, 6) ;
    dig_T1 = (data[1] << 8) | data[0] ;
    dig_T2 = (data[3] << 8) | data[2] ;
    dig_T3 = (data[5] << 8) | data[4] ;
// printf("dig_T1:0x%04X, dig_T2:0x%04X, dig_T3:0x%04X\n",dig_T1, dig_T2, dig_T3) ;

    /* read dig_P regs */
    BME280_read_regs(REG_P1_LSB, data, 18) ;
    dig_P1 = (data[ 1] << 8) | data[ 0] ;
    dig_P2 = (data[ 3] << 8) | data[ 2] ;
    dig_P3 = (data[ 5] << 8) | data[ 4] ;
    dig_P4 = (data[ 7] << 8) | data[ 6] ;
    dig_P5 = (data[ 9] << 8) | data[ 8] ;
    dig_P6 = (data[11] << 8) | data[10] ;
    dig_P7 = (data[13] << 8) | data[12] ;
    dig_P8 = (data[15] << 8) | data[14] ;
    dig_P9 = (data[17] << 8) | data[16] ;
// printf("dig_P1:0x%04X, dig_P2:0x%04X, dig_P3:0x%04X\n",dig_P1, dig_P2, dig_P3) ;
// printf("dig_P4:0x%04X, dig_P5:0x%04X, dig_P6:0x%04X\n",dig_P4, dig_P5, dig_P6) ;
// printf("dig_P7:0x%04X, dig_P8:0x%04X, dig_P9:0x%04X\n",dig_P7, dig_P8, dig_P9) ;

    /* read dig_H regs */
    BME280_read_regs(REG_H1, data, 1) ;
    dig_H1 = data[0] ;
    BME280_read_regs(REG_H2_LSB, data, 2) ;
    dig_H2 = (data[1] << 8) | data[0] ;
    BME280_read_regs(REG_H3, data, 1) ;
    dig_H3 = data[0] ;
    BME280_read_regs(REG_H4, data, 3) ;
    dig_H4 = (data[0] << 4) | (data[1] & 0x0F) ;
    dig_H5 = (data[2] << 4) | (data[1] >> 4) ;
    BME280_read_regs(REG_H6, data, 1) ;
    dig_H6 = data[0] ;
// printf("dig_H1:0x%04X, dig_H2:0x%04X, dig_H3:0x%04X\n",dig_H1, dig_H2, dig_H3) ;
// printf("dig_H4:0x%04X, dig_H5:0x%04X, dig_H6:0x%04X\n",dig_H4, dig_H5, dig_H6) ;

    BME280_trigger() ; /* dummy measure */
}

void    BME280_reset(void)
{
    uint8_t data[1] = { 0xB6 } ;
    BME280_write_regs(REG_RESET, data, 1) ;
}

uint8_t BME280_get_id(void)
{
    uint8_t data[1] ;
    BME280_read_regs(REG_ID, data, 1) ;
    return( data[0] ) ;
}

void    BME280_trigger(void)
{
    uint8_t data[1] ;

    BME280_read_regs(REG_CTRL_MEAS, data, 1) ;

    data[0] = (data[0] & 0xFC)  /* keep oversamples */
            | (0x01)            /* Forced Mode */
            ;
    BME280_write_regs(REG_CTRL_MEAS, data, 1) ;
}

uint8_t BME280_busy(void)
{
    uint8_t data[1] ;
    BME280_read_regs(REG_STATUS, data, 1) ;
    return( data[0] & 0x9 ) ;
}

float   BME280_get_temperature(void)
{
    float tempf ;
    uint8_t data[3] ;
    BME280_S32_t var1, var2, T ;
    BME280_S32_t adc_T ;

    BME280_read_regs(REG_TEMP_MSB, data, 3) ;
    adc_T = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4);
// printf("Temp Data: 0x%02X 0x%02X 0x%02X\n\r", data[0], data[1], data[2]) ;

    var1 = ((((adc_T>>3) - ((BME280_S32_t)dig_T1<<1))) * ((BME280_S32_t)dig_T2)) >> 11;
    var2 = (((((adc_T>>4) - ((BME280_S32_t)dig_T1)) * ((adc_T>>4) - ((BME280_S32_t)dig_T1))) >> 12) *
        ((BME280_S32_t)dig_T3)) >> 14;
    t_fine = var1 + var2;
    T = (t_fine * 5 + 128) >> 8;

    tempf = (float)T;
    return (tempf/100.0f);
}

float   BME280_get_humidity(void)
{
    BME280_S32_t adc_H;
    BME280_S32_t v_x1_u32r ;
    float humf;
    uint8_t data[2];

    BME280_read_regs(REG_HUM_MSB, data, 2) ;
    adc_H = (data[0] << 8) | data[1];
//printf("Humidity Data: 0x%02X 0x%02X 0x%02X\n\r", data[0], data[1]) ;

    v_x1_u32r = (t_fine - ((BME280_S32_t)76800));
    v_x1_u32r = (((((adc_H << 14) - (((BME280_S32_t)dig_H4) << 20) - (((BME280_S32_t)dig_H5) * v_x1_u32r)) +
        ((BME280_S32_t)16384)) >> 15) * (((((((v_x1_u32r * ((BME280_S32_t)dig_H6)) >> 10) * (((v_x1_u32r *
        ((BME280_S32_t)dig_H3)) >> 11) + ((BME280_S32_t)32768))) >> 10) + ((BME280_S32_t)2097152)) *
        ((BME280_S32_t)dig_H2) + 8192) >> 14));
    v_x1_u32r = (v_x1_u32r - (((((v_x1_u32r >> 15) * (v_x1_u32r >> 15)) >> 7) * ((BME280_S32_t)dig_H1)) >> 4));
    v_x1_u32r = (v_x1_u32r < 0 ? 0 : v_x1_u32r);
    v_x1_u32r = (v_x1_u32r > 419430400 ? 419430400 : v_x1_u32r);
    humf = (float)(v_x1_u32r >> 12) ;

    return (humf/1024.0f);
}

float   BME280_get_pressure(void)
{
    BME280_S32_t adc_P ;
    BME280_S64_t var1, var2, p ;
    float pressf;
    uint8_t data[3];

    BME280_read_regs(REG_PRESS_MSB, data, 3) ;
    adc_P = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4);
//printf("Pressure Data: 0x%02X 0x%02X 0x%02X\n\r", data[0], data[1], data[2]) ;

    var1 = ((BME280_S64_t)t_fine) - 128000;
    var2 = var1 * var1 * (BME280_S64_t)dig_P6;
    var2 = var2 + ((var1*(BME280_S64_t)dig_P5)<<17);
    var2 = var2 + (((BME280_S64_t)dig_P4)<<35);
    var1 = ((var1 * var1 * (BME280_S64_t)dig_P3)>>8) + ((var1 * (BME280_S64_t)dig_P2)<<12);
    var1 = (((((BME280_S64_t)1)<<47)+var1))*((BME280_S64_t)dig_P1)>>33;
    if (var1 == 0) {
        return 0; // avoid exception caused by division by zero
    }
    p = 1048576-adc_P;
    p = (((p<<31)-var2)*3125)/var1;
    var1 = (((BME280_S64_t)dig_P9) * (p>>13) * (p>>13)) >> 25;
    var2 = (((BME280_S64_t)dig_P8) * p) >> 19;
    p = ((p + var1 + var2) >> 8) + (((BME280_S64_t)dig_P7)<<4);

    pressf = (float)(p >> 8) ;
    return (pressf/100.0f);
}

(modified) main.c

main.c from the ModusToolbox Template application AnyCloud_HTTPS_Server modified for this project

/******************************************************************************
* File Name: main.c
*
* Description:
*   This is the main application file which initializes the BSP and starts
*   the RTOS scheduler. It starts a task that connects to the Wi-Fi Access
*   Point, starts the mDNS (multicast DNS) and then starts the HTTP server
*   in secure mode. All the HTTP security keys are configured in the file
*   secure_http_server.h using openSSL utility. See README.md to understand
*   how the security keys are generated.
*
* Related Document:
*   README.md
*
* Supported Kits (Target Names):
*   CY8CPROTO-062-4343W PSoC 6 Wi-Fi BT Prototyping Kit
*   CY8CKIT-062S2-43012 PSoC 6 Wi-Fi BT Pioneer Kit
*
*******************************************************************************
* (c) 2020, Cypress Semiconductor Corporation. All rights reserved.
*******************************************************************************
* This software, including source code, documentation and related materials
* ("Software"), is owned by Cypress Semiconductor Corporation or one of its
* subsidiaries ("Cypress") and is protected by and subject to worldwide patent
* protection (United States and foreign), United States copyright laws and
* international treaty provisions. Therefore, you may use this Software only
* as provided in the license agreement accompanying the software package from
* which you obtained this Software ("EULA").
*
* If no EULA applies, Cypress hereby grants you a personal, non-exclusive,
* non-transferable license to copy, modify, and compile the Software source
* code solely for use in connection with Cypress's integrated circuit products.
* Any reproduction, modification, translation, compilation, or representation
* of this Software except as specified above is prohibited without the express
* written permission of Cypress.
*
* Disclaimer: THIS SOFTWARE IS PROVIDED AS-IS, WITH NO WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NONINFRINGEMENT, IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress
* reserves the right to make changes to the Software without notice. Cypress
* does not assume any liability arising out of the application or use of the
* Software or any product or circuit described in the Software. Cypress does
* not authorize its products for use in any products where a malfunction or
* failure of the Cypress product may reasonably be expected to result in
* significant property damage, injury or death ("High Risk Product"). By
* including Cypress's product in a High Risk Product, the manufacturer of such
* system or application assumes all risk of such use and in doing so agrees to
* indemnify Cypress against all liability.
*******************************************************************************/

/* Header file includes */

#include "cyhal.h"
#include "cybsp.h"
#include "cy_retarget_io.h"
#include "secure_http_server.h"
#include <FreeRTOS.h>
#include <task.h>

/******************************************************************************
* Macros
******************************************************************************/
/* RTOS related macros. */
#define HTTPS_SERVER_TASK_STACK_SIZE        (10 * 1024) // (5 * 1024) /* <NEW> */
#define HTTPS_SERVER_TASK_PRIORITY          (1)

/*******************************************************************************
* Global Variables
********************************************************************************/
/* This enables RTOS aware debugging */
volatile int uxTopUsedPriority;

/* HTTPS server task handle. */
TaskHandle_t https_server_task_handle;

/*******************************************************************************
 * Function Name: main
 *******************************************************************************
 * Summary:
 *  Entry function for the application.
 *  This function initializes the BSP, UART port for debugging, initializes the
 *  user LED on the kit, and starts the RTOS scheduler.
 *
 * Parameters:
 *  void
 *
 * Return:
 *  int: Should never return.
 *
 *******************************************************************************/
int main(void)
{
    cy_rslt_t result;

    /* This enables RTOS aware debugging in OpenOCD */
    uxTopUsedPriority = configMAX_PRIORITIES - 1;

    /* Initialize the Board Support Package (BSP) */
    result = cybsp_init();

    CHECK_RESULT(result);

    /* Enable global interrupts */
    __enable_irq();

    /* Initialize retarget-io to use the debug UART port */
    cy_retarget_io_init(CYBSP_DEBUG_UART_TX, CYBSP_DEBUG_UART_RX, CY_RETARGET_IO_BAUDRATE);

    /* Initialize the User LED. */
    cyhal_gpio_init(CYBSP_USER_LED, CYHAL_GPIO_DIR_BIDIRECTIONAL, CYHAL_GPIO_DRIVE_STRONG, CYBSP_LED_STATE_OFF);

    /* \x1b[2J\x1b[;H - ANSI ESC sequence to clear screen */
    APP_INFO(("\x1b[2J\x1b[;H"));
    APP_INFO(("===================================\n"));
    APP_INFO(("A Simple Sensor Server\n"));                            /* <NEW> */
    APP_INFO(("===================================\n\n"));

    /* Starts the HTTPS server in secure mode. */
    xTaskCreate(https_server_task, "HTTPS Server", HTTPS_SERVER_TASK_STACK_SIZE, NULL,
                HTTPS_SERVER_TASK_PRIORITY, https_server_task_handle);

    /* Start the FreeRTOS scheduler */
    vTaskStartScheduler();

    /* Should never get here */
    CY_ASSERT(0);
}

/* [] END OF FILE */

i2c_utils.c

I2C utility to hide the difficulty of PDL API

/*
 * i2c_utils.c
 *
 *  Created on: 2020/12/23
 *      Author: Motoo Tanaka
 */

/* Header file includes */
#include "cyhal.h"
#include "cybsp.h"
#include "cyhal_scb_common.h"
#include "cy_retarget_io.h"
#include "cy_result.h"
#include "cyhal_i2c.h"
#include "cy_scb_i2c.h"

/* FreeRTOS header file */
#include <FreeRTOS.h>
#include <task.h>

/* Standard C header file */
#include <string.h>
#include <stdlib.h>

#include "i2c_utils.h"
#include "bme280.h"

/* I2C bus frequency */
#define I2C_FREQ                (100000UL)

#define DEFAULT_I2C_SLAVE_ADDRESS 0x08

#define mI2C_SCL                    (CYBSP_I2C_SCL)
#define mI2C_SDA                    (CYBSP_I2C_SDA)

static uint8_t  i2c_slave_address = DEFAULT_I2C_SLAVE_ADDRESS ;
static uint32_t i2c_timeout = 500 ; /* ms */

cyhal_i2c_t mI2C;
cyhal_i2c_cfg_t mI2C_cfg;

void i2c_sensor_task(void *arg)
{
	cy_rslt_t result ;
	int id ;
    float humidity ;
    float temperature ;
    float pressure ;

	printf("I2C Sensor Task Started\n\r") ;

	result = init_i2c_master() ;
	if (result != CY_RSLT_SUCCESS) {
		printf("I2C Init Failed\n\r") ;
		while(1) {}
	}

//	BME280_reset() ;
//    cyhal_system_delay_ms(2000);
	BME280_init() ;
    cyhal_system_delay_ms(1000);

	id = BME280_get_id() ;
	printf("BME280: ID = 0x%02X\n\r", id) ;

	while(1) {
		BME280_trigger() ;
		do {
	        cyhal_system_delay_ms(20);
		} while(BME280_busy()) ;
        humidity = BME280_get_humidity() ;
        temperature = BME280_get_temperature() ;
        pressure = BME280_get_pressure() ;
		printf("Temp: %d.%02d C,  Humidity: %d.%02d %%, Pressure: %d.%02d hPascal\n",
                    (int)(temperature + 0.005), (int)(100 * temperature + 0.5) % 100,
                    (int)(humidity + 0.005), (int)(100 * humidity + 0.5) % 100,
                    (int)(pressure + 0.005), (int)(100 * pressure + 0.5) % 100 ) ;
        cyhal_system_delay_ms(1000);
	}
}

void i2c_set_slave_address(uint8_t address)
{
    i2c_slave_address = address ;
}

cy_rslt_t init_i2c_master(void)
{
	cy_rslt_t result;
	/* Configure I2C Master */
	printf(">> Configuring I2C Master..... ");
	mI2C_cfg.is_slave = false;
	mI2C_cfg.address = 0;
	mI2C_cfg.frequencyhal_hz = I2C_FREQ;
	result = cyhal_i2c_init(&mI2C, mI2C_SDA, mI2C_SCL, NULL);
	if (result != CY_RSLT_SUCCESS) {
		printf("Failed at cyhal_i2c_init()\r\n\n") ;
		return(result) ;
	}
	result = cyhal_i2c_configure(&mI2C, &mI2C_cfg);
	if (result != CY_RSLT_SUCCESS) {
		printf("Failed at cyhal_i2c_configure()\r\n\n") ;
		return(result) ;
	}
	printf("Done\r\n\n");
	return(result) ;
}

cy_rslt_t i2c_read_byte(uint8_t *value)
{
	cy_rslt_t result ;
	result = cyhal_i2c_master_read(&mI2C, i2c_slave_address, value, 1, i2c_timeout, true) ;
	return( result ) ;
}

cy_rslt_t i2c_read_bytes(uint8_t values[], int num)
{
	cy_rslt_t result ;
	result = cyhal_i2c_master_read(&mI2C, i2c_slave_address, values, num, i2c_timeout, true) ;
	return( result ) ;
}

cy_rslt_t i2c_write_byte(uint8_t value)
{
	cy_rslt_t result ;
	result = cyhal_i2c_master_write(&mI2C, i2c_slave_address, &value, 1, i2c_timeout, true) ;
	return( result ) ;
}

cy_rslt_t i2c_write_bytes(uint8_t values[], int num)
{
	cy_rslt_t result ;
	result = cyhal_i2c_master_write(&mI2C, i2c_slave_address, values, num, i2c_timeout, true) ;
	return( result ) ;
}

cy_rslt_t i2c_read_regs(uint8_t reg_address, uint8_t *value, int num)
{
	cy_rslt_t result ;
	result = cyhal_i2c_master_write(&mI2C, i2c_slave_address, &reg_address, 1, i2c_timeout, false) ;
	if (result != CY_SCB_I2C_SUCCESS) {
		printf("i2c_read_regs: write slave address failed\n\r") ;
		return( result ) ;
	}
    cyhal_system_delay_ms(100);
	result = cyhal_i2c_master_read(&mI2C, i2c_slave_address, value, num, i2c_timeout, true) ;
	if (result != CY_SCB_I2C_SUCCESS) {
		printf("i2c_read_regs: read data failed\n\r") ;
		return( result ) ;
	}
	return( result ) ;
}

cy_rslt_t i2c_write_regs(uint8_t reg_address, uint8_t *value, int num)
{
	cy_rslt_t result ;
	uint8_t *data ;
	int i ;
	data = malloc(sizeof(uint8_t) * (num + 1)) ;
	if (data == 0) {
		printf("malloc failed, not enough memory\n\r") ;
		result = CY_SCB_I2C_MASTER_NOT_READY ; /* assign some error here */
		return(result) ;
	}
	data[0] = reg_address ;
	for (i = 0 ; i < num ; i++ ) {
		data[i+1] = value[i] ;
	}
	result = cyhal_i2c_master_write(&mI2C, i2c_slave_address, data, num+1, i2c_timeout, true) ;
	if (result != CY_SCB_I2C_SUCCESS) {
		printf("i2c_read_regs: write reg address + data failed\n\r") ;
	}
	free(data) ;
	return( result ) ;
}

test.html

html file for the web page Edit and test this html file then convert it into C String file using html2c.

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <meta charset="utf-8" />
	<meta http-equiv="refresh" content="%d; URL=https://%s.local:%d">
	<title>Simple Sensor Server</title>
    </head>
    <body>
        <div id="container">
            <h1>A Simple Sensor Server</h1>
	    <h2>CY8CKIT-062-WiFi-BT</h2>
            <p class="article">
		<table class="table1" border=2>
		<tr><th>Sensor</th><th> Temperature </th><th> Humidity </th><th> Pressure </th></tr>
		<tr><th>Value</th><td align=right> %.2f C</td><td align=right>%.2f %%</td><td align=right>%.2f hPa</td></tr>
		</table>
            </p>
		<table class="table2" border=2>
		<tr><td><form method="post">
			<input type="submit" name="toggle_led" value="Toggle LED"/>
		</form></td>
		<td bgcolor=%s><font color=white>%s</font></td></tr>
		</table>
        </div>
    </body>
</html>

(modified) secure_http_server.c

secure_http_server.c from ModusToolbox Template Application AnyCloud_HTTPS_Server, modified for this project.

/******************************************************************************
* File Name: secure_http_server.h
*
* Description: This file contains configuration parameters for the secure HTTP
* server along with the HTML page that the server will host.
*
******************************************************************************
* Copyright (2020), Cypress Semiconductor Corporation.
******************************************************************************
* This software, including source code, documentation and related materials
* (“Software”), is owned by Cypress Semiconductor Corporation or one of its
* subsidiaries (“Cypress”) and is protected by and subject to worldwide patent
* protection (United States and foreign), United States copyright laws and
* international treaty provisions. Therefore, you may use this Software only
* as provided in the license agreement accompanying the software package from
* which you obtained this Software (“EULA”).
*
* If no EULA applies, Cypress hereby grants you a personal, nonexclusive,
* non-transferable license to copy, modify, and compile the Software source
* code solely for use in connection with Cypress’s integrated circuit products.
* Any reproduction, modification, translation, compilation, or representation
* of this Software except as specified above is prohibited without the express
* written permission of Cypress.
*
* Disclaimer: THIS SOFTWARE IS PROVIDED AS-IS, WITH NO WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NONINFRINGEMENT, IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress
* reserves the right to make changes to the Software without notice. Cypress
* does not assume any liability arising out of the application or use of the
* Software or any product or circuit described in the Software. Cypress does
* not authorize its products for use in any products where a malfunction or
* failure of the Cypress product may reasonably be expected to result in
* significant property damage, injury or death (“High Risk Product”). By
* including Cypress’s product in a High Risk Product, the manufacturer of such
* system or application assumes all risk of such use and in doing so agrees to
* indemnify Cypress against all liability.
*******************************************************************************/


/*******************************************************************************
* Include guard
*******************************************************************************/
#ifndef SECURE_HTTP_SERVER_H_
#define SECURE_HTTP_SERVER_H_

/* FreeRTOS header file */
#include <FreeRTOS.h>
#include <task.h>
#include "cy_wcm.h"
#include "cybsp.h"
#include "cy_lwip.h"
#include "cyhal_gpio.h"

/* Wi-Fi Credentials: Modify WIFI_SSID and WIFI_PASSWORD to match your Wi-Fi network
 * Credentials.
 */
#define WIFI_SSID                               "MyWiFi_SSID" // "WIFI_SSID" /* <NEW> */
#define WIFI_PASSWORD                           "himitsu2021" //"WIFI_PASSWORD" /* <NEW> */

/* Security type of the Wi-Fi access point. See 'cy_wcm_security_t' structure
 * in "cy_wcm.h" for more details.
 */
#define WIFI_SECURITY_TYPE                       CY_WCM_SECURITY_WPA2_AES_PSK

#define MAX_WIFI_RETRY_COUNT                     (3)

#define CHECK_RESULT(x)                          do { if (CY_RSLT_SUCCESS != x) { CY_ASSERT(0); } } while(0);
#define APP_INFO(x)                              do { printf("Info: "); printf x; } while(0);
#define ERR_INFO(x)                              do { printf("Error: "); printf x; } while(0);

#define ERR_INFO_MDNS(eval, msg, ret)            if ((eval))           \
                                                 {                     \
                                                      ERR_INFO((msg)); \
                                                      return (ret);    \
                                                 }

#define PRINT_AND_ASSERT(result, msg, args...)   do                                 \
                                                 {                                  \
                                                     if (CY_RSLT_SUCCESS != result) \
                                                     {                              \
                                                         ERR_INFO((msg, ## args));  \
                                                         CY_ASSERT(0);              \
                                                     }                              \
                                                 } while(0);

#define HTTPS_SERVER_NAME                        "s3" // "mysecurehttpserver" /* <NEW> */
#define MDNS_TTL_SECONDS                         (255)
#define LED_STATUS_ON                            "ON"
#define LED_STATUS_OFF                           "OFF"
#define MAX_LED_STATUS_LENGTH                    (3)
#define HTTPS_PORT                               (50007)
#define MAX_SOCKETS                              (2)
#define HTTPS_GET_RESPONSE                       "Hello - Message from HTTPS server!"
#define REGISTER_RESOURCE_TASK_STACK_SIZE        (1024)
#define REGISTER_RESOURCE_TASK_PRIORITY          (tskIDLE_PRIORITY)
#define REGISTER_RESOURCE_QUEUE_LENGTH           (1)
#define NEW_RESOURCE_NAME_LENGTH                 (30)
#define HTTPS_RESOURCE_PUT_ERROR                 "Maximum resource name length is %d characters."
#define HTTPS_REQUEST_HANDLE_SUCCESS             (0)
#define HTTPS_REQUEST_HANDLE_ERROR               (-1)
#define HTTPS_REFRESH_INTERVAL                   (2)                               /* <NEW> */

#include "html.h"                                                                  /* <NEW> */
#if 0
#define HTTPS_STARTUP_WEBPAGE \
              "<!DOCTYPE html>" \
              "<html>" \
              "<head>" \
              "<title>HTTPS Server Demo</title>" \
              "</head>" \
              "<body>" \
                "<h1>HTTPS Server Demo</h1>" \
                "<form method=\"get\">" \
                    "<fieldset>" \
                        "<legend>HTTPS GET</legend>" \
                        "<input type=\"submit\" value=\"Get LED status\"/>" \
                        "<input type=\"text\" name=\"led_status\" value=\"%s\" size=\"3\" readonly/></br></br>" \
                    "</fieldset>" \
                    "</br>" \
                "</form>" \
                "<form method=\"post\">" \
                    "<fieldset>" \
                        "<legend>HTTPS POST</legend>" \
                        "<input type=\"submit\" name=\"toggle_led\" value=\"Toggle LED\"/></br></br>" \
                    "</fieldset>" \
                    "</br>" \
                "</form>" \
              "</body>" \
              "</html>"
#endif

#define PORT_SIZE_LEN                            (10)                             /* <NEW> */
#define MAX_HTTP_RESPONSE_LENGTH                 (sizeof(HTTPS_STARTUP_WEBPAGE) + sizeof(HTTPS_SERVER_NAME) + PORT_SIZE_LEN + sizeof(MAX_LED_STATUS_LENGTH) +50 + 1) /* <NEW> */

/*******************************************************************************
* Function Prototypes
********************************************************************************/
void https_server_task(void *arg);
cy_rslt_t wifi_connect(void);
cy_rslt_t mdns_responder_start(void);

#endif /* SECURE_HTTP_SERVER_H_ */


/* [] END OF FILE */

ssl2c.c

A cygwin program to convert generate_ssl_certs.sh generated crt and key files into C strings. Note: This is not a part of the Application, but to be used to create required C strings files from <servername>.local.crt, <servername>.local.key, rootCA.crt to C strings to be placed in secure_keys.h

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define EOL '\n'
#define CR  '\r'
#define SPACE ' '
#define TAB '\t'
#define DOUBLE_QUOTE '\"'
#define BACK_SLASH '\\'
#define STR_BUF_LEN 256
char str[STR_BUF_LEN+1] ;

FILE *ifp ;
FILE *ofp ;

int line_number = 0 ;


FILE *efopen(char *filename, char *mode)
{
	FILE *fp ;
	fp = fopen(filename, mode) ;
	if (fp == 0) {
		fprintf(stderr, "Can not open %s for %s\n",
			filename, mode) ;
		exit(1) ;
	}
	return( fp ) ;
}

void get_opt(int argc, char *argv[]) 
{
	if ((argc > 1) && strcmp(argv[1], "-")) {
		ifp = efopen(argv[1], "r") ;
	} else {
		ifp = stdin ;
	}
	if ((argc > 2) && strcmp(argv[2], "-")) {
		ofp = efopen(argv[2], "w") ;
	} else {
		ofp = stdout ;
	}
}

int get_line(void)
{
	int index = 0 ;
	int c ;
	while((c = fgetc(ifp)) != EOF) {
		if (c == EOL) {
			break ;
		} else if (c == CR) {
			/* ignore CR */
		} else {
			str[index] = c ;
			index++ ;
			if (index >= STR_BUF_LEN) {
				break ;
			}
		}
	}
	str[index] = 0 ;
	return( index ) ;
}

void print_html(void)
{
	int i = 0 ;
	if (line_number++) {
		fprintf(ofp, " \\\n") ;
	}

	fprintf(ofp, "\"%s\\n\"", str) ;
}

void clean_up(void)
{
	fclose(ofp) ;
	fclose(ifp) ;
}

void do_it(void)
{
	while(get_line()) {
		print_html() ;
	}
	fprintf(ofp, "\n") ;
}

int main(int argc, char *argv[])
{
	get_opt(argc, argv) ;

	do_it() ;

	clean_up() ;

	exit(0) ;
}

html.c

The HTML page to be displayed via Wi-Fi connection. The HTML is converted in to C Strings using ssl2c program.

/*
 * html.h
 *
 *  Created on: 2020/12/22
 *      Author: Motoo Tanaka
 */


#ifndef SOURCE_HTML_H_
#define SOURCE_HTML_H_
#define HTTPS_STARTUP_WEBPAGE \
"<!DOCTYPE html>" \
"<html>" \
    "<head>" \
        "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>" \
        "<meta charset=\"utf-8\" />" \
	"<meta http-equiv=\"refresh\" content=\"%d; URL=https://%s.local:%d\">" \
	"<title>Simple Sensor Server</title>" \
    "</head>" \
    "<body>" \
        "<div id=\"container\">" \
            "<h1>A Simple Sensor Server</h1>" \
	    "<h2>CY8CKIT-062-WiFi-BT</h2>" \
            "<p class=\"article\">" \
		"<table class=\"table1\" border=2>" \
		"<tr><th>Sensor</th><th> Temperature </th><th> Humidity </th><th> Pressure </th></tr>" \
		"<tr><th>Value</th><td align=right> %.2f C</td><td align=right>%.2f %%</td><td align=right>%.2f hPa</td></tr>" \
		"</table>" \
            "</p>" \
		"<table class=\"table2\" border=2>" \
		"<tr><td><form method=\"post\">" \
			"<input type=\"submit\" name=\"toggle_led\" value=\"Toggle LED\"/>" \
		"</form></td>" \
		"<td bgcolor=%s><font color=white>%s</font></td></tr>" \
		"</table>" \
        "</div>" \
    "</body>" \
"</html>"

#endif /* SOURCE_HTML_H_ */

test_html.h

C string files converted from test.html using html2c. Copy and paste the contents into html.h

"<!DOCTYPE html>" \
"<html>" \
    "<head>" \
        "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>" \
        "<meta charset=\"utf-8\" />" \
	"<meta http-equiv=\"refresh\" content=\"%d; URL=https://%s.local:%d\">" \
	"<title>Simple Sensor Server</title>" \
    "</head>" \
    "<body>" \
        "<div id=\"container\">" \
            "<h1>A Simple Sensor Server</h1>" \
	    "<h2>CY8CKIT-062-WiFi-BT</h2>" \
            "<p class=\"article\">" \
		"<table class=\"table1\" border=2>" \
		"<tr><th>Sensor</th><th> Temperature </th><th> Humidity </th><th> Pressure </th></tr>" \
		"<tr><th>Value</th><td align=right> %.2f C</td><td align=right>%.2f %%</td><td align=right>%.2f hPa</td></tr>" \
		"</table>" \
            "</p>" \
		"<table class=\"table2\" border=2>" \
		"<tr><td><form method=\"post\">" \
			"<input type=\"submit\" name=\"toggle_led\" value=\"Toggle LED\"/>" \
		"</form></td>" \
		"<td bgcolor=%s><font color=white>%s</font></td></tr>" \
		"</table>" \
        "</div>" \
    "</body>" \
"</html>"

(modified) secure_http_server.h

secure_http_server.h from ModusToolbox Template Project AnyCloud_HTTPS_Server modified for this project.

/******************************************************************************
* File Name: secure_http_server.h
*
* Description: This file contains configuration parameters for the secure HTTP
* server along with the HTML page that the server will host.
*
******************************************************************************
* Copyright (2020), Cypress Semiconductor Corporation.
******************************************************************************
* This software, including source code, documentation and related materials
* (“Software”), is owned by Cypress Semiconductor Corporation or one of its
* subsidiaries (“Cypress”) and is protected by and subject to worldwide patent
* protection (United States and foreign), United States copyright laws and
* international treaty provisions. Therefore, you may use this Software only
* as provided in the license agreement accompanying the software package from
* which you obtained this Software (“EULA”).
*
* If no EULA applies, Cypress hereby grants you a personal, nonexclusive,
* non-transferable license to copy, modify, and compile the Software source
* code solely for use in connection with Cypress’s integrated circuit products.
* Any reproduction, modification, translation, compilation, or representation
* of this Software except as specified above is prohibited without the express
* written permission of Cypress.
*
* Disclaimer: THIS SOFTWARE IS PROVIDED AS-IS, WITH NO WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NONINFRINGEMENT, IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress
* reserves the right to make changes to the Software without notice. Cypress
* does not assume any liability arising out of the application or use of the
* Software or any product or circuit described in the Software. Cypress does
* not authorize its products for use in any products where a malfunction or
* failure of the Cypress product may reasonably be expected to result in
* significant property damage, injury or death (“High Risk Product”). By
* including Cypress’s product in a High Risk Product, the manufacturer of such
* system or application assumes all risk of such use and in doing so agrees to
* indemnify Cypress against all liability.
*******************************************************************************/


/*******************************************************************************
* Include guard
*******************************************************************************/
#ifndef SECURE_HTTP_SERVER_H_
#define SECURE_HTTP_SERVER_H_

/* FreeRTOS header file */
#include <FreeRTOS.h>
#include <task.h>
#include "cy_wcm.h"
#include "cybsp.h"
#include "cy_lwip.h"
#include "cyhal_gpio.h"

/* Wi-Fi Credentials: Modify WIFI_SSID and WIFI_PASSWORD to match your Wi-Fi network
 * Credentials.
 */
#define WIFI_SSID                               "MyWiFi_SSID" // "WIFI_SSID" /* <NEW> */
#define WIFI_PASSWORD                           "himitsu2021" //"WIFI_PASSWORD" /* <NEW> */

/* Security type of the Wi-Fi access point. See 'cy_wcm_security_t' structure
 * in "cy_wcm.h" for more details.
 */
#define WIFI_SECURITY_TYPE                       CY_WCM_SECURITY_WPA2_AES_PSK

#define MAX_WIFI_RETRY_COUNT                     (3)

#define CHECK_RESULT(x)                          do { if (CY_RSLT_SUCCESS != x) { CY_ASSERT(0); } } while(0);
#define APP_INFO(x)                              do { printf("Info: "); printf x; } while(0);
#define ERR_INFO(x)                              do { printf("Error: "); printf x; } while(0);

#define ERR_INFO_MDNS(eval, msg, ret)            if ((eval))           \
                                                 {                     \
                                                      ERR_INFO((msg)); \
                                                      return (ret);    \
                                                 }

#define PRINT_AND_ASSERT(result, msg, args...)   do                                 \
                                                 {                                  \
                                                     if (CY_RSLT_SUCCESS != result) \
                                                     {                              \
                                                         ERR_INFO((msg, ## args));  \
                                                         CY_ASSERT(0);              \
                                                     }                              \
                                                 } while(0);

#define HTTPS_SERVER_NAME                        "s3" // "mysecurehttpserver" /* <NEW> */
#define MDNS_TTL_SECONDS                         (255)
#define LED_STATUS_ON                            "ON"
#define LED_STATUS_OFF                           "OFF"
#define MAX_LED_STATUS_LENGTH                    (3)
#define HTTPS_PORT                               (50007)
#define MAX_SOCKETS                              (2)
#define HTTPS_GET_RESPONSE                       "Hello - Message from HTTPS server!"
#define REGISTER_RESOURCE_TASK_STACK_SIZE        (1024)
#define REGISTER_RESOURCE_TASK_PRIORITY          (tskIDLE_PRIORITY)
#define REGISTER_RESOURCE_QUEUE_LENGTH           (1)
#define NEW_RESOURCE_NAME_LENGTH                 (30)
#define HTTPS_RESOURCE_PUT_ERROR                 "Maximum resource name length is %d characters."
#define HTTPS_REQUEST_HANDLE_SUCCESS             (0)
#define HTTPS_REQUEST_HANDLE_ERROR               (-1)
#define HTTPS_REFRESH_INTERVAL                   (2)                               /* <NEW> */

#include "html.h"                                                                  /* <NEW> */
#if 0
#define HTTPS_STARTUP_WEBPAGE \
              "<!DOCTYPE html>" \
              "<html>" \
              "<head>" \
              "<title>HTTPS Server Demo</title>" \
              "</head>" \
              "<body>" \
                "<h1>HTTPS Server Demo</h1>" \
                "<form method=\"get\">" \
                    "<fieldset>" \
                        "<legend>HTTPS GET</legend>" \
                        "<input type=\"submit\" value=\"Get LED status\"/>" \
                        "<input type=\"text\" name=\"led_status\" value=\"%s\" size=\"3\" readonly/></br></br>" \
                    "</fieldset>" \
                    "</br>" \
                "</form>" \
                "<form method=\"post\">" \
                    "<fieldset>" \
                        "<legend>HTTPS POST</legend>" \
                        "<input type=\"submit\" name=\"toggle_led\" value=\"Toggle LED\"/></br></br>" \
                    "</fieldset>" \
                    "</br>" \
                "</form>" \
              "</body>" \
              "</html>"
#endif

#define PORT_SIZE_LEN                            (10)                             /* <NEW> */
#define MAX_HTTP_RESPONSE_LENGTH                 (sizeof(HTTPS_STARTUP_WEBPAGE) + sizeof(HTTPS_SERVER_NAME) + PORT_SIZE_LEN + sizeof(MAX_LED_STATUS_LENGTH) +50 + 1) /* <NEW> */

/*******************************************************************************
* Function Prototypes
********************************************************************************/
void https_server_task(void *arg);
cy_rslt_t wifi_connect(void);
cy_rslt_t mdns_responder_start(void);

#endif /* SECURE_HTTP_SERVER_H_ */


/* [] END OF FILE */

bme280.h

header for bme280 interface program

#ifndef _BME280_H_
#define _BME280_H_
/* FreeRTOS header file */
#include <FreeRTOS.h>
#include <task.h>
#include "cybsp.h"
#include "cyhal_gpio.h"

void    BME280_init(void) ;
void    BME280_reset(void) ;
uint8_t BME280_get_id(void) ;

void    BME280_trigger(void) ;
uint8_t BME280_busy(void) ;
float   BME280_get_temperature(void) ;
float   BME280_get_humidity(void) ;
float   BME280_get_pressure(void) ;

void    BME280_read_regs(uint8_t reg_addr, uint8_t *data, int len) ;
void    BME280_write_regs(uint8_t reg_addr, uint8_t *data, int len) ;

#endif /* _BME280_H_ */

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A Simple Sensor Server Using Cy8ckit-062-wifi-bt

About the project

Project info

Items used in this project

Hardware components

Software apps and online services

Story

Schematics, diagrams and documents

Connection of CY8CKIT-062-WiFi-BT and BME280 sensor module

A Simple Sensor Server.pdf

Code

html2c.c

i2c_utils.h

bme280.c

(modified) main.c

i2c_utils.c

test.html

(modified) secure_http_server.c

ssl2c.c

html.c

test_html.h

(modified) secure_http_server.h

bme280.h

Credits

MotooTanaka

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