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Dependencies: IOTAtelier1819-FileSystem BSP_B-L475E-IOT01
main.cpp
- Committer:
- frunzl
- Date:
- 2018-12-06
- Revision:
- 27:e6be7f9b9e9f
- Parent:
- 26:130bb1173866
File content as of revision 27:e6be7f9b9e9f:
#include "mbed.h" #include <stdio.h> #include <errno.h> // Block devices #if COMPONENT_SPIF #include "SPIFBlockDevice.h" #endif #if COMPONENT_DATAFLASH #include "DataFlashBlockDevice.h" #endif #if COMPONENT_SD #include "SDBlockDevice.h" #endif #include "HeapBlockDevice.h" // File systems #include "LittleFileSystem.h" #include "FATFileSystem.h" #include "stm32l475e_iot01_tsensor.h" // Physical block device, can be any device that supports the BlockDevice API /*SPIFBlockDevice bd( MBED_CONF_SPIF_DRIVER_SPI_MOSI, MBED_CONF_SPIF_DRIVER_SPI_MISO, MBED_CONF_SPIF_DRIVER_SPI_CLK, MBED_CONF_SPIF_DRIVER_SPI_CS);*/ InterruptIn button(USER_BUTTON); Ticker toggle_led_ticker; EventQueue queue(32 * EVENTS_EVENT_SIZE); Thread t; #define BLOCK_SIZE 512 HeapBlockDevice bd(16384, BLOCK_SIZE); // File system declaration LittleFileSystem fs("fs"); static FILE *f; volatile int counter = 0; void get_data_from_sensors() { float sensor_value=0; sensor_value = BSP_TSENSOR_ReadTemp(); fprintf(f, "%f\n", sensor_value); fflush(f); fflush(stdout); printf("Saving temperature...\n"); } void print_data_from_file() { fflush(stdout); fflush(f); fseek(f, 0, SEEK_SET); float value; while (!feof(f)) { fscanf(f, "%f", &value); printf("%f\n", value); } fflush(stdout); } void toggle() { queue.call(print_data_from_file); } void toggle_led() { queue.call(get_data_from_sensors); } // Entry point for the example int main() { t.start(callback(&queue, &EventQueue::dispatch_forever)); BSP_TSENSOR_Init(); button.rise(&toggle); printf("--- Mbed OS filesystem example ---\n"); // Try to mount the filesystem printf("Mounting the filesystem... "); fflush(stdout); int err = fs.mount(&bd); printf("%s\n", (err ? "Fail :(" : "OK")); if (err) { // Reformat if we can't mount the filesystem // this should only happen on the first boot printf("No filesystem found, formatting... "); fflush(stdout); err = fs.reformat(&bd); printf("%s\n", (err ? "Fail :(" : "OK")); if (err) { error("error: %s (%d)\n", strerror(-err), err); } } // Open the numbers file printf("Opening \"/fs/numbers.txt\"... "); fflush(stdout); f = fopen("/fs/numbers.txt", "r +"); printf("%s\n", (!f ? "Fail :(" : "OK")); if (!f) { // Create the numbers file if it doesn't exist printf("No file found, creating a new file... "); fflush(stdout); f = fopen("/fs/numbers.txt", "w+"); printf("%s\n", (!f ? "Fail :(" : "OK")); if (!f) { error("error: %s (%d)\n", strerror(errno), -errno); } printf("Seeking file... "); fflush(stdout); err = fseek(f, 0, SEEK_SET); printf("%s\n", (err < 0 ? "Fail :(" : "OK")); if (err < 0) { error("error: %s (%d)\n", strerror(errno), -errno); } } // Go through and record the acc toggle_led_ticker.attach(&toggle_led, 60); }