void TIM3_IRQHandler (void)
{
TIM_ClearITPendingBit (TIM3 , TIM_IT_Update );
dataX = mySPI_GetData(OutX);
dataY = mySPI_GetData(OutY);
dataZ = mySPI_GetData(OutZ);
out[0] = '\0';
strcpy(out,"X=");
tmp[0] = '\0';
itoa(tmp, 'd', dataX);
strcat(out, tmp);
strcat(out, ",Y=");
tmp[0] = '\0';
itoa(tmp, 'd', dataY);
strcat(out, tmp);
strcat(out, ",Z=");
tmp[0] = '\0';
itoa(tmp, 'd', dataZ);
strcat(out, tmp);
strcat(out, "\r\n");
uart_write(myUSART, out, strlen(out));
}
/////////////////////////////////////////////
// http://www.lxtronic.com/index.php/basic-spi-simple-read-write
/////////////////////////////////////////////
void spiTestMems ()
{
csInit ();
spiInit(SPI1);
int8_t data;
mySPI_SendData(0x20, 0xC0); //LIS302D Config
while(1)
{
data = mySPI_GetData(0x29);
}
}
int main(void) {
///////// Initial Portion /////////////////////////
init_USART1(460800); // initialize USART1 @ 9600 baud
SystemCoreClockUpdate(); /* Get Core Clock Frequency */
if (SysTick_Config(SystemCoreClock / 1000000)) { /* SysTick 1 micro sec interrupts */
while (1); /* Capture error */
}
USART_puts(USART1, "START !"); // just send a message to indicate that it works
USART_puts(USART1, " \r \n"); // new line
//Init GPIO for Leds on board and button input
init_GPIO();
//Init SPI1
mySPI_Init();
//Delay for all periferals to be ready
Delay(1000000); //Delay 1s for cap to be charged
// mySPI_SendByte(0x11); //SDATAC
//mySPI_Send3Byte(0x20,0x00,0x00);
//Issue Reset Pulse for ADS1299
GPIO_ResetBits(GPIOD, GPIO_Pin_2);
Delay(5); //Delay couples of clock cycles for ADS to read the signal
GPIO_SetBits(GPIOD, GPIO_Pin_2); // Complete reset Pulse
Delay(18); //Delay at least 18 clock cycles
//Send stop command for ADS1299
/*Put CS line down
send out command (stop command) SDATAC = 0x11,
delay 1 micro seccond;
put CS line up again*/
mySPI_SendByte(0x11); //SDATAC
Delay(10000);
//¾WREG CONFIG3 E0h
// mySPI_SendData(0x43); //Configure register
mySPI_Send3Byte(0x43,0x00,0xE1); //config3 ENABLE internal reference
mySPI_Send3Byte(0x41,0x00,0xD6); // Config1 noi daisy chain; output data rate 250sps(F/4096)
mySPI_Send3Byte(0x42,0x00,0xC0); //Config 2: test source externa, keep all as default
//Write to 8 channel open the shorted
mySPI_Send3Byte(0x45,0x00,0x00); //collecting data for channel 1-4
mySPI_Send3Byte(0x46,0x00,0x00);
mySPI_Send3Byte(0x47,0x00,0x00);
mySPI_Send3Byte(0x48,0x00,0x00);
mySPI_Send3Byte(0x20,0x00,0x00);
switch (getIDval & 0x1F ) { //least significant bits reports channels
case 0x10: //16
gMaxChan = 4; //ads1294
break;
case 0x11: //17
gMaxChan = 6; //ads1296
break;
case 0x12: //18
gMaxChan = 8; //ads1298
break;
case 0x1E: //30
gMaxChan = 8; //ads1299
USART_puts(USART1, "ADS1299 Hooray!");
break;
default:
gMaxChan = 0;
}
readRegister(18,0); // Read all register from address 0
//Start conversation. Set start pin to 1
GPIO_SetBits(GPIOD, GPIO_Pin_0);
// Asking for data to send continueously
mySPI_SendByte(0x10); //SDATAC begin to read data
/////////////////- Loop - ////////////////////////////////////
while (1){
uint8_t i =0;
// You can do whatever you want in here
/*
USART_puts(USART1, "Init 2 complete! Hello World! \r \n"); // just send a message to indicate that it works
//GPIO_ToggleBits(GPIOD, GPIO_Pin_15 | GPIO_Pin_14 | GPIO_Pin_13| GPIO_Pin_12 );
GPIO_ToggleBits(GPIOD, GPIO_Pin_12 ); //Test Leds on board
Delay(200);
GPIO_ToggleBits(GPIOD, GPIO_Pin_13 ); //Test Leds on board
Delay(200);
GPIO_ToggleBits(GPIOD, GPIO_Pin_14 ); //Test Leds on board
Delay(1000);
*/
// GPIO_ToggleBits(GPIOD, GPIO_Pin_12 ); //Test Leds on board
if(!(GPIO_ReadInputData(GPIOD) & GPIO_Pin_1)){ //Read state of D1 (DRDY signal). Start new process if it is 0
for( i=0; i<9; i++){
char strADS[50];
getdata = mySPI_GetData(0x00);
// regAddress = (0x20 | i);
// getDataSPI = mySPI_Send3Byte((0x20 | i),0x00,0x00); //Increase to required address from the base address;
if( i==2){ //Read 1 register at a time
if (getdata > 0x007FFFFF) //Convert minus data
{
getdata = 0xFFFFFF - getdata;
getdata = getdata/19373;
//snprintf(strADS, 50, "Channel %d Val: %X \r \n", i, getdata); //convert int to string
snprintf(strADS, 50, "E0,%d\n",getdata); //convert int to string
USART_puts(USART1, strADS); //pirnt the address in string format
}
else{
getdata = getdata/19373;
//snprintf(strADS, 50, "Channel %d Val: %X \r \n", i, getdata); //convert int to string
snprintf(strADS, 50, "E0,%d\n",getdata); //convert int to string
USART_puts(USART1, strADS); //pirnt the address in string format
}
}
}
//Delay(50000);
} //if
}// while (1)
//////////////////////////////////////////////////////////
} //main
