/******************************************************************************
** Main Function main()
******************************************************************************/
int main (void) {
uint32_t i;
/* SystemClockUpdate() updates the SystemFrequency variable */
SystemClockUpdate();
UARTInit(0, 115200);
UARTInit(1, 115200);
u0_src = (uint8_t *)UART0_DMA_TX_SRC;
u0_dst = (uint8_t *)UART0_DMA_RX_DST;
u1_src = (uint8_t *)UART1_DMA_TX_SRC;
u1_dst = (uint8_t *)UART1_DMA_RX_DST;
for ( i = 0; i < UART_DMA_SIZE; i++ )
{
*u0_src++ = *u1_src++ = ConvertDigital(i);
*u0_dst++ = *u1_dst++ = 0;
}
DMA_Init();
/* Connect UART0 and UART1 via a RS232 cable. The sequence is, UART DMA starts
from UART0 TX, lookback to UART1 RX using channel 0 and 1. Then, UART DMA starts
from UART1 TX, lookback to UART0 RX using channel 2 and 3.
So, both M2P+P2M on UART0 and UART1 are tested. */
/* DMA from UART0 TX to UART1 RX using channel 0 and 1. */
DMAChannel_Init( 0, M2P );
LPC_GPDMACH0->CConfig |= 0x0C001|(0x00<<1)|(DMA_UART0_TX<<6)|(0x01 << 11);
LPC_UART0->FCR |= 0x08;
/* DMA request was sent inside DMA ISR when DMA is done.
The data should arrive at UART1 RX already. */
while ( !UARTDMA0Done );
UARTDMA0Done = 0;
while ( !UARTDMA1Done );
UARTDMA1Done = 0;
/* Between UART0 TX and UART1 RX, the data should match, or fatal DMA error. */
u1_src = (uint8_t *)UART0_DMA_TX_SRC;
u1_dst = (uint8_t *)UART1_DMA_RX_DST;
for ( i = 0; i < UART_DMA_SIZE; i++ )
{
if ( *u1_src++ != *u1_dst++ )
{
while ( 1 );
}
}
/* DMA from UART1 TX to UART0 RX using channel 2 and 3. */
DMAChannel_Init( 2, M2P );
NVIC_EnableIRQ(DMA_IRQn);
LPC_GPDMACH2->CConfig |= 0x0C001|(0x00<<1)|(DMA_UART1_TX<<6)|(0x01 << 11);
LPC_UART1->FCR |= 0x08;
/* DMA request was sent inside DMA ISR when DMA is done.
The data should arrive at UART1 RX already. */
while ( !UARTDMA2Done );
UARTDMA2Done = 0;
while ( !UARTDMA3Done );
UARTDMA3Done = 0;
LPC_GPDMA->Sync = (0x1<<DMA_UART0_RX)|(0x1<<DMA_UART1_TX);
/* The data is transferred from M2U0TX-U1RX-, M2U1TX-U0RX. */
/* Between UART0 TX and UART0 RX, the data should match, or fatal DMA error. */
u1_src = (uint8_t *)UART1_DMA_TX_SRC;
u1_dst = (uint8_t *)UART0_DMA_RX_DST;
for ( i = 0; i < UART_DMA_SIZE; i++ )
{
if ( *u1_src++ != *u1_dst++ )
{
while ( 1 );
}
}
while ( 1 );
return(0);
}
/*****************************************************************************
** Function name: PrintoutADCValue
**
** Descriptions: Dump ADC reading to the UART
**
** parameters: None
** Returned value: None
**
*****************************************************************************/
static void PrintoutADCValue( void )
{
uint32_t i, j = 0;
/* Bring cursor to home on terminal, write headers */
UARTBuffer[j++] = 'C';
UARTBuffer[j++] = 'h';
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = 'C';
UARTBuffer[j++] = 'U';
UARTBuffer[j++] = 'R';
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = 'M';
UARTBuffer[j++] = 'I';
UARTBuffer[j++] = 'N';
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = 'M';
UARTBuffer[j++] = 'A';
UARTBuffer[j++] = 'X';
UARTBuffer[j++] = '\r';
UARTBuffer[j++] = '\n';
UARTSend( (uint8_t *)UARTBuffer, j );
/* Update current, min, and max values on terminal */
for ( i = 0; i < ADC_NUM; i++ )
{
j = 0;
UARTBuffer[j++] = ConvertDigital(i);
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ADCValue[i]>>8)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ADCValue[i]>>4)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)(ADCValue[i]&0xF));
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ADCMinValue[i]>>8)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ADCMinValue[i]>>4)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)(ADCMinValue[i]&0xF));
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ADCMaxValue[i]>>8)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ADCMaxValue[i]>>4)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)(ADCMaxValue[i]&0xF));
UARTBuffer[j++] = '\r';
UARTBuffer[j++] = '\n';
UARTSend( (uint8_t *)UARTBuffer, j );
}
/* Show number of samples until next clear */
j=0;
UARTBuffer[j++] = 'N';
UARTBuffer[j++] = 'o';
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = 'o';
UARTBuffer[j++] = 'f';
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = 'S';
UARTBuffer[j++] = 'a';
UARTBuffer[j++] = 'm';
UARTBuffer[j++] = 'p';
UARTBuffer[j++] = 'l';
UARTBuffer[j++] = 'e';
UARTBuffer[j++] = 's';
UARTBuffer[j++] = ':';
UARTBuffer[j++] = ' ';
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ClearCounter>>8)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)((ClearCounter>>4)&0xF));
UARTBuffer[j++] = ConvertDigital( (uint8_t)(ClearCounter&0xF));
UARTBuffer[j++] = '\r';
UARTBuffer[j++] = '\n';
UARTBuffer[j++] = '\n';
UARTSend( (uint8_t *)UARTBuffer, j );
return;
}
