Leonardo Iandiorio / Mbed OS TemperatureButtonFile

read history of temperatures on user click

Dependencies:   BSP_B-L475E-IOT01

main.cpp@1:57a53e16f6e6, 2018-12-06 (annotated)

Committer:
iandil
Date:
Thu Dec 06 16:30:27 2018 +0000
Revision:
1:57a53e16f6e6
Parent:
0:c105215e1c51 
fixed time interval;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
iandil 0:c105215e1c51 1
iandil 0:c105215e1c51 2 #include "mbed.h"
iandil 0:c105215e1c51 3 #include <stdio.h>
iandil 0:c105215e1c51 4 #include <errno.h>
iandil 0:c105215e1c51 5 #include "stm32l475e_iot01_tsensor.h"
iandil 0:c105215e1c51 6 #include "nvstore.h"
iandil 0:c105215e1c51 7
iandil 0:c105215e1c51 8 // Block devices
iandil 0:c105215e1c51 9 #if COMPONENT_SPIF
iandil 0:c105215e1c51 10 #include "SPIFBlockDevice.h"
iandil 0:c105215e1c51 11 #endif
iandil 0:c105215e1c51 12
iandil 0:c105215e1c51 13 #if COMPONENT_DATAFLASH
iandil 0:c105215e1c51 14 #include "DataFlashBlockDevice.h"
iandil 0:c105215e1c51 15 #endif
iandil 0:c105215e1c51 16
iandil 0:c105215e1c51 17 #if COMPONENT_SD
iandil 0:c105215e1c51 18 #include "SDBlockDevice.h"
iandil 0:c105215e1c51 19 #endif
iandil 0:c105215e1c51 20
iandil 0:c105215e1c51 21 #include "HeapBlockDevice.h"
iandil 0:c105215e1c51 22 // File systems
iandil 0:c105215e1c51 23 #include "LittleFileSystem.h"
iandil 0:c105215e1c51 24 #include "FATFileSystem.h"
iandil 0:c105215e1c51 25
iandil 0:c105215e1c51 26 EventQueue queue(32 * EVENTS_EVENT_SIZE);
iandil 0:c105215e1c51 27 Thread thread;
iandil 0:c105215e1c51 28 Ticker ticker;
iandil 0:c105215e1c51 29
iandil 0:c105215e1c51 30
iandil 0:c105215e1c51 31 // Physical block device, can be any device that supports the BlockDevice API
iandil 0:c105215e1c51 32 /*SPIFBlockDevice bd(
iandil 0:c105215e1c51 33 MBED_CONF_SPIF_DRIVER_SPI_MOSI,
iandil 0:c105215e1c51 34 MBED_CONF_SPIF_DRIVER_SPI_MISO,
iandil 0:c105215e1c51 35 MBED_CONF_SPIF_DRIVER_SPI_CLK,
iandil 0:c105215e1c51 36 MBED_CONF_SPIF_DRIVER_SPI_CS);*/
iandil 0:c105215e1c51 37
iandil 0:c105215e1c51 38 #define BLOCK_SIZE 512
iandil 0:c105215e1c51 39 HeapBlockDevice bd(16384, BLOCK_SIZE);
iandil 0:c105215e1c51 40
iandil 0:c105215e1c51 41 // File system declaration
iandil 0:c105215e1c51 42 LittleFileSystem fs("fs");
iandil 0:c105215e1c51 43
iandil 0:c105215e1c51 44 InterruptIn button(USER_BUTTON);
iandil 0:c105215e1c51 45
iandil 0:c105215e1c51 46
iandil 0:c105215e1c51 47 static FILE *file;
iandil 0:c105215e1c51 48 volatile int counter = 0;
iandil 0:c105215e1c51 49
iandil 0:c105215e1c51 50 void readSensors() {
iandil 0:c105215e1c51 51 float temperature = 0;
iandil 0:c105215e1c51 52 temperature = BSP_TSENSOR_ReadTemp();
iandil 0:c105215e1c51 53 fprintf(file, "%f\n", temperature);
iandil 0:c105215e1c51 54 fflush(file);
iandil 0:c105215e1c51 55 fflush(stdout);
iandil 0:c105215e1c51 56 printf("Temperature Saved\n");
iandil 0:c105215e1c51 57 }
iandil 0:c105215e1c51 58
iandil 0:c105215e1c51 59 void readAndPrintFile() {
iandil 0:c105215e1c51 60 fflush(stdout);
iandil 0:c105215e1c51 61 fflush(file);
iandil 0:c105215e1c51 62 fseek(file, 0, SEEK_SET);
iandil 0:c105215e1c51 63 float temperature;
iandil 0:c105215e1c51 64 while(!feof(file)) {
iandil 0:c105215e1c51 65 fscanf(file, "%f", &temperature);
iandil 0:c105215e1c51 66 printf("Temperature: %f\n", temperature);
iandil 0:c105215e1c51 67 }
iandil 0:c105215e1c51 68 fflush(stdout);
iandil 0:c105215e1c51 69 }
iandil 0:c105215e1c51 70
iandil 0:c105215e1c51 71
iandil 0:c105215e1c51 72 void printData() {
iandil 0:c105215e1c51 73 queue.call(readAndPrintFile);
iandil 0:c105215e1c51 74 }
iandil 0:c105215e1c51 75 void readData() {
iandil 0:c105215e1c51 76 queue.call(readSensors);
iandil 0:c105215e1c51 77 }
iandil 0:c105215e1c51 78
iandil 0:c105215e1c51 79
iandil 0:c105215e1c51 80 // Entry point for the example
iandil 0:c105215e1c51 81 int main() {
iandil 0:c105215e1c51 82 thread.start(callback(&queue, &EventQueue::dispatch_forever));
iandil 0:c105215e1c51 83 BSP_TSENSOR_Init();
iandil 0:c105215e1c51 84 button.rise(&printData);
iandil 0:c105215e1c51 85
iandil 0:c105215e1c51 86 printf("--- Mbed OS filesystem example ---\n");
iandil 0:c105215e1c51 87
iandil 0:c105215e1c51 88 // Try to mount the filesystem
iandil 0:c105215e1c51 89 printf("Mounting the filesystem... ");
iandil 0:c105215e1c51 90 fflush(stdout);
iandil 0:c105215e1c51 91 int err = fs.mount(&bd);
iandil 0:c105215e1c51 92 printf("%s\n", (err ? "Fail :(" : "OK"));
iandil 0:c105215e1c51 93 if (err) {
iandil 0:c105215e1c51 94 // Reformat if we can't mount the filesystem
iandil 0:c105215e1c51 95 // this should only happen on the first boot
iandil 0:c105215e1c51 96 printf("No filesystem found, formatting... ");
iandil 0:c105215e1c51 97 fflush(stdout);
iandil 0:c105215e1c51 98 err = fs.reformat(&bd);
iandil 0:c105215e1c51 99 printf("%s\n", (err ? "Fail :(" : "OK"));
iandil 0:c105215e1c51 100 if (err) {
iandil 0:c105215e1c51 101 error("error: %s (%d)\n", strerror(-err), err);
iandil 0:c105215e1c51 102 }
iandil 0:c105215e1c51 103 }
iandil 0:c105215e1c51 104
iandil 0:c105215e1c51 105 // Open the numbers file
iandil 0:c105215e1c51 106 printf("Opening \"/fs/numbers.txt\"... ");
iandil 0:c105215e1c51 107 fflush(stdout);
iandil 0:c105215e1c51 108 file = fopen("/fs/numbers.txt", "r+");
iandil 0:c105215e1c51 109 printf("%s\n", (!file ? "Fail :(" : "OK"));
iandil 0:c105215e1c51 110 if (!file) {
iandil 0:c105215e1c51 111 // Create the numbers file if it doesn't exist
iandil 0:c105215e1c51 112 printf("No file found, creating a new file... ");
iandil 0:c105215e1c51 113 fflush(stdout);
iandil 0:c105215e1c51 114 file = fopen("/fs/numbers.txt", "w+");
iandil 0:c105215e1c51 115 printf("%s\n", (!file ? "Fail :(" : "OK"));
iandil 0:c105215e1c51 116 if (!file) {
iandil 0:c105215e1c51 117 error("error: %s (%d)\n", strerror(errno), -errno);
iandil 0:c105215e1c51 118 }
iandil 0:c105215e1c51 119
iandil 0:c105215e1c51 120 printf("Seeking file... ");
iandil 0:c105215e1c51 121 fflush(stdout);
iandil 0:c105215e1c51 122 err = fseek(file, 0, SEEK_SET);
iandil 0:c105215e1c51 123 printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
iandil 0:c105215e1c51 124 if (err < 0) {
iandil 0:c105215e1c51 125 error("error: %s (%d)\n", strerror(errno), -errno);
iandil 0:c105215e1c51 126 }
iandil 0:c105215e1c51 127 }
iandil 0:c105215e1c51 128
iandil 0:c105215e1c51 129
iandil 0:c105215e1c51 130
iandil 1:57a53e16f6e6 131 ticker.attach(&readData, 60);
iandil 0:c105215e1c51 132
iandil 0:c105215e1c51 133
iandil 0:c105215e1c51 134 }