Seeed
/
Wio-example-sd-driver
SD card example for Wio cellular targets - Seeed Wio 3G and Wio LTE-M1/NB1(BG96)
main.cpp@1:bda3045adb2f, 2019-02-13 (annotated)
- Committer:
- MACRUM
- Date:
- Wed Feb 13 02:08:25 2019 +0000
- Revision:
- 1:bda3045adb2f
- Parent:
- 0:5e920a8fb894
Add error macro
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MACRUM | 0:5e920a8fb894 | 1 | #include "mbed.h" |
MACRUM | 0:5e920a8fb894 | 2 | #include "FATFileSystem.h" |
MACRUM | 0:5e920a8fb894 | 3 | #include "SDBlockDevice.h" |
MACRUM | 0:5e920a8fb894 | 4 | #include <stdio.h> |
MACRUM | 0:5e920a8fb894 | 5 | #include <errno.h> |
MACRUM | 0:5e920a8fb894 | 6 | /* mbed_retarget.h is included after errno.h so symbols are mapped to |
MACRUM | 0:5e920a8fb894 | 7 | * consistent values for all toolchains */ |
MACRUM | 0:5e920a8fb894 | 8 | #include "platform/mbed_retarget.h" |
MACRUM | 0:5e920a8fb894 | 9 | |
MACRUM | 0:5e920a8fb894 | 10 | #if defined(TARGET_WIO_3G) || defined(TARGET_WIO_BG96) |
MACRUM | 0:5e920a8fb894 | 11 | DigitalOut SD_POWER(PA_15, 1); |
MACRUM | 1:bda3045adb2f | 12 | #else |
MACRUM | 1:bda3045adb2f | 13 | #error This example only supports the Seeed Wio 3G or Wio LTE M1/NB1(BG96) |
MACRUM | 0:5e920a8fb894 | 14 | #endif |
MACRUM | 0:5e920a8fb894 | 15 | |
MACRUM | 0:5e920a8fb894 | 16 | SDBlockDevice sd(MBED_CONF_SD_SPI_MOSI, |
MACRUM | 0:5e920a8fb894 | 17 | MBED_CONF_SD_SPI_MISO, |
MACRUM | 0:5e920a8fb894 | 18 | MBED_CONF_SD_SPI_CLK, |
MACRUM | 0:5e920a8fb894 | 19 | MBED_CONF_SD_SPI_CS); |
MACRUM | 0:5e920a8fb894 | 20 | FATFileSystem fs("sd", &sd); |
MACRUM | 0:5e920a8fb894 | 21 | |
MACRUM | 0:5e920a8fb894 | 22 | void return_error(int ret_val){ |
MACRUM | 0:5e920a8fb894 | 23 | if (ret_val) |
MACRUM | 0:5e920a8fb894 | 24 | printf("Failure. %d\n", ret_val); |
MACRUM | 0:5e920a8fb894 | 25 | else |
MACRUM | 0:5e920a8fb894 | 26 | printf("done.\n"); |
MACRUM | 0:5e920a8fb894 | 27 | } |
MACRUM | 0:5e920a8fb894 | 28 | |
MACRUM | 0:5e920a8fb894 | 29 | void errno_error(void* ret_val){ |
MACRUM | 0:5e920a8fb894 | 30 | if (ret_val == NULL) { |
MACRUM | 0:5e920a8fb894 | 31 | printf(" Failure. %d \n", errno); |
MACRUM | 0:5e920a8fb894 | 32 | while (true) __WFI(); |
MACRUM | 0:5e920a8fb894 | 33 | } else |
MACRUM | 0:5e920a8fb894 | 34 | printf(" done.\n"); |
MACRUM | 0:5e920a8fb894 | 35 | } |
MACRUM | 0:5e920a8fb894 | 36 | |
MACRUM | 0:5e920a8fb894 | 37 | int main() |
MACRUM | 0:5e920a8fb894 | 38 | { |
MACRUM | 0:5e920a8fb894 | 39 | int error = 0; |
MACRUM | 0:5e920a8fb894 | 40 | printf("Welcome to the filesystem example.\n"); |
MACRUM | 0:5e920a8fb894 | 41 | |
MACRUM | 0:5e920a8fb894 | 42 | printf("Opening a new file, numbers.txt."); |
MACRUM | 0:5e920a8fb894 | 43 | FILE* fd = fopen("/sd/numbers.txt", "w+"); |
MACRUM | 0:5e920a8fb894 | 44 | errno_error(fd); |
MACRUM | 0:5e920a8fb894 | 45 | |
MACRUM | 0:5e920a8fb894 | 46 | for (int i = 0; i < 20; i++){ |
MACRUM | 0:5e920a8fb894 | 47 | printf("Writing decimal numbers to a file (%d/20)\r", i); |
MACRUM | 0:5e920a8fb894 | 48 | fprintf(fd, "%d\n", i); |
MACRUM | 0:5e920a8fb894 | 49 | } |
MACRUM | 0:5e920a8fb894 | 50 | printf("Writing decimal numbers to a file (20/20) done.\n"); |
MACRUM | 0:5e920a8fb894 | 51 | |
MACRUM | 0:5e920a8fb894 | 52 | printf("Closing file."); |
MACRUM | 0:5e920a8fb894 | 53 | fclose(fd); |
MACRUM | 0:5e920a8fb894 | 54 | printf(" done.\n"); |
MACRUM | 0:5e920a8fb894 | 55 | |
MACRUM | 0:5e920a8fb894 | 56 | printf("Re-opening file read-only."); |
MACRUM | 0:5e920a8fb894 | 57 | fd = fopen("/sd/numbers.txt", "r"); |
MACRUM | 0:5e920a8fb894 | 58 | errno_error(fd); |
MACRUM | 0:5e920a8fb894 | 59 | |
MACRUM | 0:5e920a8fb894 | 60 | printf("Dumping file to screen.\n"); |
MACRUM | 0:5e920a8fb894 | 61 | char buff[16] = {0}; |
MACRUM | 0:5e920a8fb894 | 62 | while (!feof(fd)){ |
MACRUM | 0:5e920a8fb894 | 63 | int size = fread(&buff[0], 1, 15, fd); |
MACRUM | 0:5e920a8fb894 | 64 | fwrite(&buff[0], 1, size, stdout); |
MACRUM | 0:5e920a8fb894 | 65 | } |
MACRUM | 0:5e920a8fb894 | 66 | printf("EOF.\n"); |
MACRUM | 0:5e920a8fb894 | 67 | |
MACRUM | 0:5e920a8fb894 | 68 | printf("Closing file."); |
MACRUM | 0:5e920a8fb894 | 69 | fclose(fd); |
MACRUM | 0:5e920a8fb894 | 70 | printf(" done.\n"); |
MACRUM | 0:5e920a8fb894 | 71 | |
MACRUM | 0:5e920a8fb894 | 72 | printf("Opening root directory."); |
MACRUM | 0:5e920a8fb894 | 73 | DIR* dir = opendir("/sd/"); |
MACRUM | 0:5e920a8fb894 | 74 | errno_error(fd); |
MACRUM | 0:5e920a8fb894 | 75 | |
MACRUM | 0:5e920a8fb894 | 76 | struct dirent* de; |
MACRUM | 0:5e920a8fb894 | 77 | printf("Printing all filenames:\n"); |
MACRUM | 0:5e920a8fb894 | 78 | while((de = readdir(dir)) != NULL){ |
MACRUM | 0:5e920a8fb894 | 79 | printf(" %s\n", &(de->d_name)[0]); |
MACRUM | 0:5e920a8fb894 | 80 | } |
MACRUM | 0:5e920a8fb894 | 81 | |
MACRUM | 0:5e920a8fb894 | 82 | printf("Closeing root directory. "); |
MACRUM | 0:5e920a8fb894 | 83 | error = closedir(dir); |
MACRUM | 0:5e920a8fb894 | 84 | return_error(error); |
MACRUM | 0:5e920a8fb894 | 85 | printf("Filesystem Demo complete.\n"); |
MACRUM | 0:5e920a8fb894 | 86 | |
MACRUM | 0:5e920a8fb894 | 87 | while (true) {} |
MACRUM | 0:5e920a8fb894 | 88 | } |
MACRUM | 0:5e920a8fb894 | 89 |