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https://github.com/markqvist/OpenModem.git
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61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#include "SD.h"
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FATFS sdfs; // FatFs work area
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void sd_init(void) {
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SPI_DDR |= _BV(SPI_MOSI) | _BV(SPI_CLK);
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SPI_DDR &= ~(_BV(SPI_MISO));
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SPCR = (1<<SPE) | (1<<MSTR) | (1<<SPR0);
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SD_CS_DDR |= _BV(SD_CS_PIN);
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SD_DETECT_DDR &= ~_BV(SD_DETECT_PIN);
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SD_DETECT_PORT |= _BV(SD_DETECT_PIN); // Enable pull-up
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}
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// TODO: Remove this
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void sd_test(void) {
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printf("Testing SD card functions\r\n");
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FRESULT res = 0xFF;
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while (res != 0) {
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res = f_mount(&sdfs, "", 1);
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printf("SD Detect: %d\r\n", (SD_DETECT_INPUT & _BV(SD_DETECT_PIN)));
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printf("Res: %d\r\n", res);
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delay_ms(500);
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}
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char str[12];
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DWORD sn;
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f_getlabel("", str, &sn);
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printf("Label: %s, SN: %lu\r\n", str, sn);
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FIL fil;
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char line[100];
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FRESULT fr;
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fr = f_open(&fil, "file1.txt", FA_READ);
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printf("File open result: %d\r\n", fr);
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while (f_gets(line, sizeof line, &fil)) {
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printf(line);
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}
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f_close(&fil);
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printf("Returning from SD test\r\n");
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}
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// TODO: Get time from RTC or host
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// DWORD get_fattime (void)
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// {
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// // Returns current time packed into a DWORD variable
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// return ((DWORD)(2013 - 1980) << 25) // Year 2013
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// | ((DWORD)8 << 21) // Month 7
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// | ((DWORD)2 << 16) // Mday 28
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// | ((DWORD)20 << 11) // Hour 0..24
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// | ((DWORD)30 << 5) // Min 0
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// | ((DWORD)0 >> 1); // Sec 0
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// }
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