Good afternoon,
I am working with a custom PCB using the CC1310. I have an SD card connected to the following CC1310 pins with a series 100 ohm resistor and a 10k pullup resistor:
SD card MOSI: Pin 17 (DIO_11)
SD card MISO: Pin 11 (DIO_6)
SD card CS: Pin 10 (DIO_5)
SD card CLK: Pin 18 (DIO_12)
I am using the SDRAW.C (nortos) example. I changed nothing in the code, but here it is just in case:
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/*
* ======== sdraw.c ========
*/
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/SD.h>
#include <ti/display/Display.h>
/* Example/Board Header files */
#include "Board.h"
/* Buffer size used for the file copy process */
#define BUFFSIZE 1024
/* Starting sector to write/read to */
#define STARTINGSECTOR 0
#define BYTESPERKILOBYTE 1024
/*
* Set this constant to 1 in order to write to the SD card.
* WARNING: Running this example with WRITEENABLE set to 1 will cause
* any filesystem present on the SD card to be corrupted!
*/
#define WRITEENABLE 1
static Display_Handle display;
unsigned char textarray[BUFFSIZE];
unsigned char cpy_buff[BUFFSIZE];
/*
* ======== mainThread ========
* Task to perform a raw write and read from the SD card.
* Note: Running this application will cause any filesystem on the
* SD card to become corrupted!
*/
void *mainThread(void *arg0)
{
int_fast8_t result;
uint_fast32_t cardCapacity;
uint_fast32_t totalSectors;
uint_fast32_t sectorSize;
uint_fast32_t sectors;
int i;
SD_Handle sdHandle;
Display_init();
GPIO_init();
SD_init();
/* Configure the LED pin */
GPIO_setConfig(Board_GPIO_RLED, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
// GPIO_setConfig(Board_SPI_FLASH_CS, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_HIGH);
/* Open the display for output */
display = Display_open(Display_Type_UART, NULL);
if (display == NULL) {
/* Failed to open display driver */
while (1);
}
/* Turn on user LED */
GPIO_write(Board_GPIO_RLED, Board_GPIO_LED_ON);
Display_printf(display, 0, 0, "Starting the SD example\n");
/* Initialize the array to write to the SD card */
for (i = 0; i < BUFFSIZE; i++) {
textarray[i] = i & 0xFF;
}
/* Mount and register the SD Card */
sdHandle = SD_open(Board_SD0, NULL);
if (sdHandle == NULL) {
Display_printf(display, 0, 0, "Error starting the SD card\n");
while (1);
}
result = SD_initialize(sdHandle);
if (result != SD_STATUS_SUCCESS) {
Display_printf(display, 0, 0, "Error initializing the SD card\n");
while (1);
}
totalSectors = SD_getNumSectors(sdHandle);
sectorSize = SD_getSectorSize(sdHandle);
cardCapacity = (totalSectors / BYTESPERKILOBYTE) * sectorSize;
Display_printf(display, 0, 0,
"There are %u total sectors on the SD card.\n", totalSectors);
Display_printf(display, 0, 0,
"The Read/Write sector size is %u bytes\n", sectorSize);
Display_printf(display, 0, 0,
"The total card capacity is %u KB\n", cardCapacity);
/* Calculate number of sectors taken up by the array by rounding up */
sectors = (sizeof(textarray) + sectorSize - 1) / sectorSize;
#if (WRITEENABLE)
Display_printf(display, 0, 0, "Writing the array...\n");
result = SD_write(sdHandle, textarray, STARTINGSECTOR, sectors);
if (result != SD_STATUS_SUCCESS) {
Display_printf(display, 0, 0, "Error writing to the SD card\n");
while (1);
}
#endif
Display_printf(display, 0, 0, "Reading the array...\n");
result = SD_read(sdHandle, cpy_buff, STARTINGSECTOR, sectors);
if (result != SD_STATUS_SUCCESS) {
Display_printf(display, 0, 0, "Error reading from the SD card\n");
while (1);
}
/* Compare data read from the SD card with expected values */
for (i = 0; i < BUFFSIZE; i++) {
if (cpy_buff[i] != textarray[i]) {
Display_printf(display, 0, 0,
"Data read from SD card differed from expected value\n");
Display_printf(display, 0, 0,
" Expected value for index %d: %d, got %d\n", i,
textarray[i], cpy_buff[i]);
Display_printf(display, 0, 0, "Run the example with WRITEENABLE "
"= 1 to write expected values to the SD card\n");
break;
}
}
if (i == BUFFSIZE) {
Display_printf(display, 0, 0,
"Data read from SD card matched expected values\n");
}
SD_close(sdHandle);
return (NULL);
}
I have changed the CC1310_LAUNCHXL_SPI0_MISO, CC1310_LAUNCHXL_SPI0_MOSI, CC1310_LAUNCHXL_SPI0_CLK and CC1310_LAUNCHXL_SPI0_CSN pins in the CC1310_LAUNCHXL.H file to match my pinout. I have changed nothing else in this file:
/* SPI */ #define CC1310_LAUNCHXL_SPI_FLASH_CS IOID_5 // WAS IOID_20 #define CC1310_LAUNCHXL_FLASH_CS_ON 0 #define CC1310_LAUNCHXL_FLASH_CS_OFF 1 /* SPI Board */ #define CC1310_LAUNCHXL_SPI0_MISO IOID_11 //WAS IOID_8 /* RF1.20 */ #define CC1310_LAUNCHXL_SPI0_MOSI IOID_6 //WAS IOID_9 /* RF1.18 */ #define CC1310_LAUNCHXL_SPI0_CLK IOID_12 //WAS IOID_10 /* RF1.16 */ #define CC1310_LAUNCHXL_SPI0_CSN IOID_5 // WAS IOID_11 #define CC1310_LAUNCHXL_SPI1_MISO PIN_UNASSIGNED #define CC1310_LAUNCHXL_SPI1_MOSI PIN_UNASSIGNED #define CC1310_LAUNCHXL_SPI1_CLK PIN_UNASSIGNED #define CC1310_LAUNCHXL_SPI1_CSN PIN_UNASSIGNED /* UART Board */ #define CC1310_LAUNCHXL_UART_RX IOID_2 //was 2 /* RXD */ #define CC1310_LAUNCHXL_UART_TX IOID_3 //was 3 /* TXD */ #define CC1310_LAUNCHXL_UART_CTS IOID_19 /* CTS */ #define CC1310_LAUNCHXL_UART_RTS IOID_18 /* RTS */
Yet when insert a freshly formatted SD card in my PCB, it gets stuck in a while loop because SD_open returns NULL.
What am I doing wrong?
Thanks in advance.
KR,
Mirte H
