microSD Card control function for DISCO-F769NI based on BD_SD_DISCO_F746NG library by Roy Krikke
Dependencies: BD_SD_DISCO_F769NI BSP_DISCO_F769NI
Fork of DISCO-F746NG_BLOCK_DEVICE_WITH_FAT_FILESYSTEM_ON_SDCARD by
Please refer following my Notebook page.
/users/kenjiArai/notebook/sd-card-control-new/#
main.cpp
- Committer:
- kenjiArai
- Date:
- 2021-01-14
- Revision:
- 8:12621f1fcbbe
- Parent:
- 7:e7767b779c8c
File content as of revision 8:12621f1fcbbe:
/* * Mbed Application program * SD Card file control function with FatFs on Mbed-os6 * * Copyright (c) 2018,'19,'20,'21 Kenji Arai / JH1PJL * http://www7b.biglobe.ne.jp/~kenjia/ * https://os.mbed.com/users/kenjiArai/ * Created: April 7th, 2018 * Revised: January 14th, 2021 */ // Include -------------------------------------------------------------------- #include "mbed.h" #include "FATFileSystem.h" #include "SDBlockDeviceDISCOF769NI.h" #include "mon.h" #include "uart_as_stdio.h" // Definition ----------------------------------------------------------------- #define USER_SW_ON 1 //#define LOOP_TIME 25 // 25mS #define LOOP_TIME 150 // 150mS #define DEBUG 0 #if DEBUG #define DBG(...) printf(__VA_ARGS__) #else #define DBG(...) {;} #endif // Constructor ---------------------------------------------------------------- DigitalOut led(LED1); DigitalIn user_sw(USER_BUTTON); // Instantiate the Block Device for sd card on DISCO-F769NI SDBlockDeviceDISCOF769NI bd; FATFileSystem fs("fs"); Timer tmr; // RAM ------------------------------------------------------------------------ // ROM / Constant data -------------------------------------------------------- const char *const opening_msg0 = "microSD Card test program"; const char *const opening_msg1 = " -> run on Mbed OS-6\r\n"; const char *const opening_msg2 = "microSD Card is ready for use\r\n"; const char *const opening_msg3 = "Please hit any key to start!\r\n"; // Function prototypes -------------------------------------------------------- void return_error (int ret_val); void errno_error (void* ret_val); extern void print_revision(void); //------------------------------------------------------------------------------ // Control Program //------------------------------------------------------------------------------ int main() { time_t seconds; uint32_t data0 = 10000U; uint32_t data1 = 20000U; uint32_t data2 = 30000U; uint32_t data3 = 40000U; uint32_t data4 = 50000U; uint32_t data5 = 60000U; printf("\r\n\r\n"); print_revision(); DBG("line:%d\r\n", __LINE__); printf("\r\nStart\r\n"); int error = 0; printf("Welcome to the filesystem example.\r\n"); printf("Mounting the filesystem on \"/fs\". \r\n"); error = fs.mount(&bd); return_error(error); FILE* fp = fopen("/fs/mydata.txt", "a"); errno_error(fp); if (fp != 0) { DBG("line:%d\r\n", __LINE__); printf("%s%s", opening_msg0, opening_msg1); fprintf(fp,"%s%s", opening_msg0, opening_msg1); printf("%s", opening_msg2); printf("File: mydata.txt\r\n"); fclose(fp); } else { printf("ERROR\r\n"); } printf("%s", opening_msg3); while (readable() == 0) { ;} char c = getc(); // dummy read while (true) { DBG("line:%d\r\n", __LINE__); tmr.reset(); tmr.start(); float size_disk = get_disk_freespace() / (1024.0f * 1024.0f * 1024.0f); uint32_t size_file = get_data_file_size("mydata.txt") / 1024; printf(", free disk: %.3f GB, file: %u kB, ", size_disk, size_file); fp = fopen("/fs/mydata.txt", "a"); if(fp != 0) { char tmp[64]; DBG("line:%d\r\n", __LINE__); seconds = time(NULL); strftime(tmp, 64, "DATE %H:%M:%S,%Y/%m/%d,", localtime(&seconds)); printf("%s", tmp); fprintf(fp, "%s", tmp); printf("%08d;%08d;%08d;%08d;%08d;%08d\r\n", ++data0, ++data1, ++data2, ++data3, ++data4, ++data5); fprintf(fp, "%08d;%08d;%08d;%08d;%08d;%08d\r\n", data0, data1, data2, data3, data4, data5); fclose(fp); } else { printf("ERROR\r\n"); } uint32_t time_sd = chrono::duration_cast<chrono::milliseconds>( tmr.elapsed_time()).count(); printf("time:%3d ", time_sd); if (time_sd < LOOP_TIME -2) { ThisThread::sleep_for(chrono::milliseconds(LOOP_TIME - time_sd)); } if (user_sw == USER_SW_ON) { DBG("line:%d\r\n", __LINE__); break; } if (readable()) { mon(); } led = !led; } while(true) { mon(); system_reset(); } } void return_error (int ret_val) { if (ret_val) { printf("retrun error/Failure. %d\r\n", ret_val); } } void errno_error (void* ret_val) { if (ret_val == NULL) { printf("error #/Failure. %d \r\n", errno); } }