Hi,
We are interfacing an ADS1278EVM to the lcdkc6748 using J16 Camera SPI1 port. We are also using C6748_StarterWare_1_20_03_03 platform. Our clock signal(sampling clock-4MHz) wich is the same serial clock signal (SPI1_CLK) comes from a signal generator, we are also using a GPIO port to sensing the DRDY signal from conversor for commnication starts.
I want to configure the C6748lck as slave mode but I do not have any data. The conversor has a 24 bit resolution So I want to receive two 12 bits streams between samples. I only enable one channel.
Please could you have a look into my code and write where is the mistake? I can not see where the mistake is.
RENUEVE:
while(1){
c= GPIOPinRead(SOC_GPIO_0_REGS, 81);
if (c==GPIO_PIN_LOW) {
z=0;
delay(0);
goto RECEPCION;
}
c= GPIOPinRead(SOC_GPIO_0_REGS, 81);
}
RECEPCION:
for(y=z;y<(z+2);y++){
SPITransmitData1(SOC_SPI_1_REGS, 0xFFF);
d= SPIReceiveFlag(SOC_SPI_1_REGS);
if(!d)
Recepcion_dato[y]=SPIDataReceive(SOC_SPI_1_REGS);
SPIIntStatusClear(SOC_SPI_1_REGS, SPI_RECV_INT);
//else
//Contar_error=Contar_error+1;
}
z=y;
SPIDisable(SOC_SPI_1_REGS);
goto RENUEVE;
void ConfigurarSPI(){
unsigned int val = 0x0E04;
SPIModeConfigure(SOC_SPI_1_REGS, SPI_SLAVE_MODE);//Define que la tarjeta LCDK sera Esclavo (bit CLKMOD y MASTER)
SPIPinControl(SOC_SPI_1_REGS, 0, 0, &val);//Define que el DSP sera esclavo en configuracion de tres pines
SPIDat1Config(SOC_SPI_1_REGS, SPI_DATA_FORMAT0, 0x0);
//SPIClkConfigure(SOC_SPI_1_REGS, 150000000, 4000000, SPI_DATA_FORMAT0);
SPICharLengthSet(SOC_SPI_1_REGS, 0xC, SPI_DATA_FORMAT0);
SPIShiftMsbFirst(SOC_SPI_1_REGS, SPI_DATA_FORMAT0);
SPIConfigClkFormat(SOC_SPI_1_REGS,(SPI_CLK_POL_LOW|SPI_CLK_INPHASE),SPI_DATA_FORMAT0);
}
