/*********************************************************************//**
* @brief c_entry: Main ADC program body
* @param[in] None
* @return None
**********************************************************************/
void c_entry(void)
{
volatile uint32_t tmp;
#if !__DMA_USED__
uint32_t adc_value;
#endif
uint8_t quit;
EXTI_InitTypeDef EXTICfg;
#if __DMA_USED__
GPDMA_Channel_CFG_Type GPDMACfg;
#endif
GPIO_Init();
/* Initialize debug via UART0
* – 115200bps
* – 8 data bit
* – No parity
* – 1 stop bit
* – No flow control
*/
debug_frmwrk_init();
// print welcome screen
print_menu();
/*
* Init ADC pin connect
* AD0.2 on P0.25
*/
PINSEL_ConfigPin(BRD_ADC_PREPARED_CH_PORT, BRD_ADC_PREPARED_CH_PIN, BRD_ADC_PREPARED_CH_FUNC_NO);
PINSEL_SetAnalogPinMode(BRD_ADC_PREPARED_CH_PORT,BRD_ADC_PREPARED_CH_PIN,ENABLE);
#ifdef LPC177x_8x_ADC_BURST_MULTI
/*
* Init ADC pin connect
* AD0.3 on P0.26
*/
PINSEL_ConfigPin(0, 26, 1);
PINSEL_SetAnalogPinMode(0,26,ENABLE);
#endif
/* Configuration for ADC:
* select: ADC channel 2
* ADC channel 3
* ADC conversion rate = 400KHz
*/
ADC_Init(LPC_ADC, 400000);
ADC_ChannelCmd(LPC_ADC,BRD_ADC_PREPARED_CHANNEL,ENABLE);
#ifdef LPC177x_8x_ADC_BURST_MULTI
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_n,ENABLE);
#endif
#ifdef LPC177x_8x_ADC_INJECT_TEST
//Config P2.10 as EINT0
PINSEL_ConfigPin(2,10,1);
EXTI_Init();
EXTICfg.EXTI_Line = EXTI_EINT0;
/* edge sensitive */
EXTICfg.EXTI_Mode = EXTI_MODE_EDGE_SENSITIVE;
EXTICfg.EXTI_polarity = EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE;
EXTI_Config(&EXTICfg);
GPIO_SetDir(LED_PORT,LED_PIN,1);
GPIO_SetValue(LED_PORT,LED_PIN);
NVIC_EnableIRQ(EINT0_IRQn);
#endif
#if __DMA_USED__
/* Initialize GPDMA controller */
GPDMA_Init();
// Setup GPDMA channel --------------------------------
// channel 0
GPDMACfg.ChannelNum = 0;
// Source memory - unused
GPDMACfg.SrcMemAddr = 0;
// Destination memory
GPDMACfg.DstMemAddr = (uint32_t)s_buf;
// Transfer size
GPDMACfg.TransferSize = DMA_SIZE;
// Transfer width - unused
GPDMACfg.TransferWidth = 0;
// Transfer type
GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_P2M;
// Source connection
GPDMACfg.SrcConn = GPDMA_CONN_ADC;
// Destination connection - unused
GPDMACfg.DstConn = 0;
// Linker List Item - unused
GPDMACfg.DMALLI = 0;
/* Enable GPDMA interrupt */
NVIC_EnableIRQ(DMA_IRQn);
while(1)
{
for(tmp = 0; tmp < 0x1000; tmp++);
/* Reset terminal counter */
Channel0_TC = 0;
/* Reset Error counter */
Channel0_Err = 0;
for(tmp = 0; tmp < DMA_SIZE; tmp++)
{
s_buf[tmp] = 0;
}
//Start burst conversion
ADC_BurstCmd(LPC_ADC,ENABLE);
GPDMA_Setup(&GPDMACfg);
// Enable GPDMA channel 1
GPDMA_ChannelCmd(0, ENABLE);
/* Wait for GPDMA processing complete */
while ((Channel0_TC == 0));
GPDMA_ChannelCmd(0, DISABLE);
for(tmp = 0; tmp < DMA_SIZE; tmp++)
{
if(s_buf[tmp] & ADC_GDR_DONE_FLAG)
{
_DBG("ADC value on channel "); _DBD(ADC_GDR_CH(s_buf[tmp])); _DBG(": ");
_DBD32(ADC_GDR_RESULT(s_buf[tmp]));_DBG_("");
}
}
if(_DG_NONBLOCK(&quit) &&
(quit == 'Q' || quit == 'q'))
break;
}
#else
//Start burst conversion
ADC_BurstCmd(LPC_ADC,ENABLE);
while(1)
{
adc_value = ADC_ChannelGetData(LPC_ADC,BRD_ADC_PREPARED_CHANNEL);
_DBG("ADC value on channel "); _DBD(BRD_ADC_PREPARED_CHANNEL); _DBG(": ");
_DBD32(adc_value);
_DBG_("");
#ifdef LPC177x_8x_ADC_BURST_MULTI
adc_value = ADC_ChannelGetData(LPC_ADC,_ADC_CHANNEL_n);
_DBG("ADC value on channel 3: ");
_DBD32(adc_value);
_DBG_("");
#endif
// Wait for a while
for(tmp = 0; tmp < 1500000; tmp++);
if(_DG_NONBLOCK(&quit) &&
(quit == 'Q' || quit == 'q'))
break;
}
#endif /*__DMA_USED__*/
_DBG_("Demo termination!!!");
ADC_DeInit(LPC_ADC);
GPIO_Deinit();
}
/*********************************************************************//**
* @brief c_entry: Main ADC program body
* @param[in] None
* @return int
**********************************************************************/
int c_entry(void)
{
PINSEL_CFG_Type PinCfg;
#ifdef MCB_LPC_1768_ADC_BURST_MULTI
PINSEL_CFG_Type PinCfg1;
#endif
uint32_t tmp;
uint32_t adc_value;
/* Initialize debug via UART0
* – 115200bps
* – 8 data bit
* – No parity
* – 1 stop bit
* – No flow control
*/
debug_frmwrk_init();
// print welcome screen
print_menu();
/* Because the potentiometer on different boards (MCB & IAR) connect
* with different ADC channel, so we have to configure correct ADC channel
* on each board respectively.
* If you want to check other ADC channels, you have to wire this ADC pin directly
* to potentiometer pin (please see schematic doc for more reference)
*/
#ifdef MCB_LPC_1768
/*
* Init ADC pin connect
* AD0.2 on P0.25
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 25;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
#ifdef MCB_LPC_1768_ADC_BURST_MULTI
/*
* Init ADC pin connect
* AD0.3 on P0.26
*/
PinCfg1.Funcnum = 1;
PinCfg1.OpenDrain = 0;
PinCfg1.Pinmode = 0;
PinCfg1.Pinnum = 26;
PinCfg1.Portnum = 0;
PINSEL_ConfigPin(&PinCfg1);
#endif
#elif defined (IAR_LPC_1768)
/* select P1.31 as AD0.5 */
PinCfg.Funcnum = 3;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 31;
PinCfg.Portnum = 1;
PINSEL_ConfigPin(&PinCfg);
#endif
/* Configuration for ADC:
* select: ADC channel 2 (if using MCB1700 board)
* ADC channel 5 (if using IAR-LPC1768 board)
* ADC conversion rate = 200KHz
*/
ADC_Init(LPC_ADC, 200000);
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL,ENABLE);
#ifdef MCB_LPC_1768_ADC_BURST_MULTI
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_3,ENABLE);
#endif
#ifdef MCB_LPC17XX_ADC_INJECT_TEST
FIO_ByteSetDir(1, 3, POLL_LED, 1);
FIO_ByteClearValue(1, 3, POLL_LED);
// Enable GPIO interrupt P2.10
GPIO_IntCmd(2,(1<<10),1);
NVIC_EnableIRQ(EINT3_IRQn);
#endif
//Start burst conversion
ADC_BurstCmd(LPC_ADC,ENABLE);
while(1)
{
#ifdef MCB_LPC_1768
adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_2);
_DBG("ADC value on channel 2: ");
#elif defined (IAR_LPC_1768)
adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_5);
_DBG("ADC value on channel 5: ");
#endif
_DBD32(adc_value);
_DBG_("");
#ifdef MCB_LPC_1768_ADC_BURST_MULTI
adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_3);
_DBG("ADC value on channel 3: ");
_DBD32(adc_value);
_DBG_("");
#endif
// Wait for a while
for(tmp = 0; tmp < 1500000; tmp++);
}
ADC_DeInit(LPC_ADC);
return (0);
}