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#include "logger.h"
void putch(unsigned char byteTx) {
uart_putch(byteTx);
}
void init(void)
{
OSCCON = 0xf0;
ANSELA = 0x00;
ANSELB = 0x00;
ANSELC = 0x00;
LATA = 0x00;
TRISA = 0x00;
LATCbits.LATC6 = 1;
TRISCbits.TRISC6 = 0;
TRISCbits.TRISC7 = 1;
uart_init();
RC6PPS = 0x24;
RC7PPS = 0x25;
dac_init();
}
void put_rc (const char * s, FRESULT rc) {
const char *p;
FRESULT i;
static const char str[] = "OK\0DISK_ERR\0NOT_READY\0NO_FILE\0NOT_OPENED\0NOT_ENABLED\0NO_FILE_SYSTEM\0";
for (p = str, i = 0; i != rc && *p; i++) while(*p++);
printf("%s:\t%u\tFR_%s\r\n", s, rc, p);
}
static char buff[256];
static FATFS fatfs;
static DIR dir;
static FIL file;
static FILINFO fno;
void main(void)
{
uint8_t fcount;
uint16_t k;
init();
for (k = 0; k < 1000; k++);
printf("\r\nStarting up...\r\n");
DSTATUS stat = disk_initialize(0);
printf("Initialised:\t%d\r\n", stat);
put_rc("Mounted", f_mount(&fatfs, "", 0));
put_rc("Opened dir", f_opendir(&dir, "/"));
fcount = 0;
for (;;) {
uint8_t res = f_readdir(&dir, &fno);
if (!fno.fname[0])
break;
if (fno.fattrib & AM_DIR)
printf("d\t%s\r\n", fno.fname);
else
printf("%7lu\t%s\r\n", fno.fsize, fno.fname);
fcount++;
}
printf("%u item(s)\r\n", fcount);
printf("\r\nOpening audio.wav...\r\n");
put_rc("Opened", f_open(&file, "audio.wav", FA_READ));
printf("Reading %u sectors...\r\n", fno.fsize);
FSIZE_t bytecount = fno.fsize;
while (bytecount) {
uint16_t cnt;
if (bytecount >= sizeof buff)
cnt = sizeof buff;
else
cnt = bytecount;
bytecount -= cnt;
uint8_t res = f_read(&file, buff, cnt, &k);
if (res != FR_OK) {
put_rc("Failed to read", res);
break;
}
if (k != cnt) {
printf("Bytecounts differ\r\n");
break;
}
putch('.');
for (k = 0; k < cnt; k++) {
dac_set(buff[k]);
delay_10us();
}
}
printf("\r\nAll done.\r\n");
k = 0;
while (1) {
//dac_set(0xff & (k++));
if (k & 0x0100)
k = 0;
}
while (1) {
LATAbits.LATA1 = ~LATAbits.LATA1;
}
}
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