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:
- 2020-05-02
- Revision:
- 7:e7767b779c8c
- Parent:
- 6:3c8b8e3cc0f8
- Child:
- 8:12621f1fcbbe
File content as of revision 7:e7767b779c8c:
/* * Mbed Application program * SD Card file control function with FatFs on Mbed-os5 * * Copyright (c) 2018,'19,'20 Kenji Arai / JH1PJL * http://www7b.biglobe.ne.jp/~kenjia/ * https://os.mbed.com/users/kenjiArai/ * Created: April 7th, 2018 * Revised: May 2nd, 2020 */ // Include -------------------------------------------------------------------- #include "mbed.h" #include "FATFileSystem.h" #include "SDBlockDeviceDISCOF769NI.h" #include "mon.h" // Definition ----------------------------------------------------------------- #define USER_SW_ON 1 #define LOOP_TIME 25 // 25mS #define DEBUG 0 #if DEBUG #define DBG(...) pc.printf(__VA_ARGS__) #else #define DBG(...) {;} #endif // Constructor ---------------------------------------------------------------- DigitalOut led(LED1); DigitalIn user_sw(USER_BUTTON); Serial pc(USBTX, USBRX, 115200); // 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-5\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); extern uint32_t get_disk_freespace(void); extern uint32_t get_data_file_size(const char *const file_name); //------------------------------------------------------------------------------ // 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; pc.printf("\r\n\r\n"); print_revision(); DBG("line:%d\r\n", __LINE__); pc.printf("\r\nStart\r\n"); int error = 0; pc.printf("Welcome to the filesystem example.\r\n"); pc.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__); pc.printf("%s%s", opening_msg0, opening_msg1); fprintf(fp,"%s%s", opening_msg0, opening_msg1); pc.printf("%s", opening_msg2); pc.printf("File: mydata.txt\r\n"); fclose(fp); } else { pc.printf("ERROR\r\n"); } pc.printf("%s", opening_msg3); while (pc.readable() == 0) { ;} char c = pc.getc(); // dummy read while (true) { DBG("line:%d\r\n", __LINE__); tmr.reset(); tmr.start(); uint32_t size_disk = get_disk_freespace(); uint32_t size_file = get_data_file_size("mydata.txt"); pc.printf("free disk:%10u, file:%8u ", 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)); pc.printf("%s", tmp); fprintf(fp, "%s", tmp); pc.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 { pc.printf("ERROR\r\n"); } uint32_t time_sd = tmr.read_us(); pc.printf("time[uS]:%6d ", time_sd); time_sd /= 1000; // change uS to ms if (time_sd < LOOP_TIME -2){ ThisThread::sleep_for(LOOP_TIME - time_sd); } if (user_sw == USER_SW_ON) { DBG("line:%d\r\n", __LINE__); break; } if (pc.readable()) { mon(); } led = !led; } while(true) { mon(); system_reset(); } } void return_error (int ret_val) { if (ret_val) { pc.printf("retrun error/Failure. %d\r\n", ret_val); } } void errno_error (void* ret_val) { if (ret_val == NULL) { pc.printf("error #/Failure. %d \r\n", errno); } }