void analogSensorsInit(void)
{
// pin configuration for AirSpeed Sensor
PINSEL_CFG_Type airPin_intStr;
// pin configuration for UltraSonic Distance Sensor
PINSEL_CFG_Type usonicPin_intStr;
//Setup Air Speed Sensor Pin
airPin_intStr.Funcnum = AIR_PIN_FUNC;
airPin_intStr.OpenDrain = PINSEL_PINMODE_NORMAL;
airPin_intStr.Pinmode = PINSEL_PINMODE_PULLUP;
airPin_intStr.Pinnum = AIR_PIN;
airPin_intStr.Portnum = AIR_PORT;
PINSEL_ConfigPin(&airPin_intStr);
//UltraSonic Sensor Pin
usonicPin_intStr.Funcnum = USON_PIN_FUNC;
usonicPin_intStr.OpenDrain = PINSEL_PINMODE_NORMAL;
usonicPin_intStr.Pinmode = PINSEL_PINMODE_PULLUP;
usonicPin_intStr.Pinnum = USON_PIN;
usonicPin_intStr.Portnum = USON_PORT;
PINSEL_ConfigPin(&usonicPin_intStr);
// set AD Conversion speed
ADC_Init(LPC_ADC, 200000);
// disable the interrupt
ADC_IntConfig (LPC_ADC, ADC_ADGINTEN, SET);
// enable the ADC channels
ADC_ChannelCmd(LPC_ADC, AIR_CHAN, ENABLE);
ADC_ChannelCmd(LPC_ADC, USON_CHAN, ENABLE);
}
char sampleADC(void)
{
char res = 0x0;
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
ADC_DeInit(ADC1);
ADC_VrefintCmd(ENABLE);
delay_10us(3);
ADC_Cmd(ADC1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Single,
ADC_Resolution_6Bit, ADC_Prescaler_1);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_9Cycles);
ADC_ChannelCmd(ADC1, ADC_Channel_0, ENABLE);
delay_10us(3);
ADC_SoftwareStartConv(ADC1);
while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);
res = (char)ADC_GetConversionValue(ADC1);
ADC_VrefintCmd(DISABLE);
ADC_DeInit(ADC1);
/* disable SchmittTrigger for ADC_Channel_24, to save power */
//ADC_SchmittTriggerConfig(ADC1, ADC_Channel_24, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_0, DISABLE);
return res;
}
int Get_ADC_Val(char* pin) {
int channel, intChannel;
if(pin == "P15") {
channel = ADC_CHANNEL_0;
intChannel = ADC_ADINTEN0;
}
else if(pin == "P16") {
channel = ADC_CHANNEL_1;
intChannel = ADC_ADINTEN1;
}
else if(pin == "P17") {
channel = ADC_CHANNEL_2;
intChannel = ADC_ADINTEN2;
}
else if(pin == "P18") {
channel = ADC_CHANNEL_3;
intChannel = ADC_ADINTEN3;
}
ADC_IntConfig(LPC_ADC, intChannel, DISABLE);
ADC_ChannelCmd(LPC_ADC, channel, ENABLE);
ADC_StartCmd(LPC_ADC, ADC_START_NOW);
while(!(ADC_ChannelGetStatus(LPC_ADC, channel, ADC_DATA_DONE)));
uint32_t adcVal= ADC_ChannelGetData(LPC_ADC, channel);
ADC_ChannelCmd(LPC_ADC, channel, DISABLE);
return (int) adcVal;
}
uint16_t AnalogIn::readBits()
{
ADC_ChannelCmd(LPC_ADC, channel, ENABLE);
ADC_StartCmd(LPC_ADC, ADC_START_NOW);
while(!(ADC_ChannelGetStatus(LPC_ADC, channel, ADC_DATA_DONE)));
uint16_t bits = ADC_ChannelGetData(LPC_ADC, channel);
ADC_ChannelCmd(LPC_ADC, channel, DISABLE);
return bits;
}
/**
* @brief Read ADC1
* @caller several functions
* @param None
* @retval ADC value
*/
u16 ADC_Supply(void)
{
uint8_t i;
uint16_t res;
/* Enable ADC clock */
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
/* de-initialize ADC */
ADC_DeInit(ADC1);
/*ADC configuration
ADC configured as follow:
- Channel VREF
- Mode = Single ConversionMode(ContinuousConvMode disabled)
- Resolution = 12Bit
- Prescaler = /1
- sampling time 9 */
ADC_VrefintCmd(ENABLE);
delay_10us(3);
ADC_Cmd(ADC1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Single,
ADC_Resolution_12Bit, ADC_Prescaler_1);
ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_SamplingTime_9Cycles);
ADC_ChannelCmd(ADC1, ADC_Channel_Vrefint, ENABLE);
delay_10us(3);
/* initialize result */
res = 0;
for(i=8; i>0; i--)
{
/* start ADC convertion by software */
ADC_SoftwareStartConv(ADC1);
/* wait until end-of-covertion */
while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0 );
/* read ADC convertion result */
res += ADC_GetConversionValue(ADC1);
}
/* de-initialize ADC */
ADC_VrefintCmd(DISABLE);
ADC_DeInit(ADC1);
/* disable SchmittTrigger for ADC_Channel_24, to save power */
ADC_SchmittTriggerConfig(ADC1, ADC_Channel_24, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_Vrefint, DISABLE);
return (res>>3);
}
// Handle ADC interrupts
// NOTE: This could probably be less complicated...
void ADC_IRQHandler(void)
{
elua_adc_dev_state *d = adc_get_dev_state( 0 );
elua_adc_ch_state *s = d->ch_state[ d->seq_ctr ];
//int i;
// Disable sampling & current sequence channel
ADC_StartCmd( LPC_ADC, 0 );
ADC_ChannelCmd( LPC_ADC, s->id, DISABLE );
ADC_IntConfig( LPC_ADC, s->id, DISABLE );
if ( ADC_ChannelGetStatus( LPC_ADC, s->id, ADC_DATA_DONE ) )
{
d->sample_buf[ d->seq_ctr ] = ( u16 )ADC_ChannelGetData( LPC_ADC, s->id );
s->value_fresh = 1;
if ( s->logsmoothlen > 0 && s->smooth_ready == 0)
adc_smooth_data( s->id );
#if defined( BUF_ENABLE_ADC )
else if ( s->reqsamples > 1 )
{
buf_write( BUF_ID_ADC, s->id, ( t_buf_data* )s->value_ptr );
s->value_fresh = 0;
}
#endif
if ( adc_samples_available( s->id ) >= s->reqsamples && s->freerunning == 0 )
platform_adc_stop( s->id );
}
// Set up for next channel acquisition if we're still running
if( d->running == 1 )
{
// Prep next channel in sequence, if applicable
if( d->seq_ctr < ( d->seq_len - 1 ) )
d->seq_ctr++;
else if( d->seq_ctr == ( d->seq_len - 1 ) )
{
adc_update_dev_sequence( 0 );
d->seq_ctr = 0; // reset sequence counter if on last sequence entry
}
ADC_ChannelCmd( LPC_ADC, d->ch_state[ d->seq_ctr ]->id, ENABLE );
ADC_IntConfig( LPC_ADC, d->ch_state[ d->seq_ctr ]->id, ENABLE );
if( d->clocked == 1 && d->seq_ctr == 0 ) // always use clock for first in clocked sequence
ADC_StartCmd( LPC_ADC, adc_trig[ d->timer_id ] );
// Start next conversion if unclocked or if clocked and sequence index > 0
if( ( d->clocked == 1 && d->seq_ctr > 0 ) || d->clocked == 0 )
ADC_StartCmd( LPC_ADC, ADC_START_NOW );
}
}
uint32_t adc_get(uint32_t channel)
{
uint32_t res;
ADC_ChannelCmd(LPC_ADC0, channel, ENABLE);
delayus(500);
ADC_StartCmd(LPC_ADC0, ADC_START_NOW);
while (!(ADC_ChannelGetStatus(LPC_ADC0, channel, ADC_DATA_DONE)));
res = ADC_ChannelGetData(LPC_ADC0, channel);
ADC_ChannelCmd(LPC_ADC0, channel, DISABLE);
return res;
}
/**
* @brief Configure ADC peripheral
* @param None
* @retval None
*/
static void ADC_Config(void)
{
/* Initialize and configure ADC1 */
ADC_Init(ADC1, ADC_ConversionMode_Single, ADC_Resolution_12Bit, ADC_Prescaler_2);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);
ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_SamplingTime_384Cycles);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 Channels 3 */
ADC_ChannelCmd(ADC1, ADC_Channel_3, ENABLE); /* connected to Potentiometer RV */
/* Enable ADC1 Channels 24 */
ADC_ChannelCmd(ADC1, ADC_Channel_24, ENABLE); /* connected to BNC */
}
void ADC_Config(void)
{
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_DMA1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);
ADC_Cmd(ADC1, ENABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_24, ENABLE); //设置ADC通道
SYSCFG_REMAPDMAChannelConfig(REMAP_DMA1Channel_ADC1ToChannel0);
DMA_Init(DMA1_Channel0,
BUFFER_ADDRESS,
ADC1_DR_ADDRESS,
BUFFER_SIZE,
DMA_DIR_PeripheralToMemory,
DMA_Mode_Circular,
DMA_MemoryIncMode_Inc,
DMA_Priority_High,
DMA_MemoryDataSize_HalfWord);
DMA_Cmd(DMA1_Channel0, ENABLE);
DMA_ITConfig(DMA1_Channel0, DMA_ITx_TC, ENABLE);
DMA_GlobalCmd(ENABLE);
}
int platform_adc_start_sequence()
{
elua_adc_dev_state *d = adc_get_dev_state( 0 );
if( d->running != 1 )
{
adc_update_dev_sequence( 0 );
// Start sampling on first channel
d->seq_ctr = 0;
ADC_ChannelCmd( LPC_ADC, d->ch_state[ d->seq_ctr ]->id, ENABLE );
ADC_IntConfig( LPC_ADC, d->ch_state[ d->seq_ctr ]->id, ENABLE );
d->running = 1;
NVIC_EnableIRQ( ADC_IRQn );
if( d->clocked == 1 )
{
ADC_StartCmd( LPC_ADC, adc_trig[ d->timer_id ] );
TIM_ResetCounter( tmr[ d->timer_id ] );
TIM_Cmd( tmr[ d->timer_id ], ENABLE );
}
else
ADC_StartCmd( LPC_ADC, ADC_START_NOW );
}
return PLATFORM_OK;
}
/**
* @brief ADC_Icc(ADC_24 of ADC_0~27) initialization
* @caller main and ADC_Icc_Test
* @param None
* @retval None
*/
void ADC_Icc_Init(void)
{
/* Enable ADC clock */
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
/* de-initialize ADC */
ADC_DeInit(ADC1);
/* ADC configured as follow:
- NbrOfChannel = 1 - ADC_Channel_24
- Mode = Single ConversionMode(ContinuousConvMode disabled)
- Resolution = 12Bit
- Prescaler = /1
- sampling time 159 */
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Single,ADC_Resolution_12Bit, ADC_Prescaler_1);
ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_SamplingTime_9Cycles);
ADC_ChannelCmd(ADC1, ADC_Channel_24, ENABLE);
/* disable SchmittTrigger for ADC_Channel_24, to save power */
ADC_SchmittTriggerConfig(ADC1, ADC_Channel_24, DISABLE);
/* a short time of delay is required after enable ADC */
delay_10us(3);
}
/**
* @brief Configure ADC and Analog watchdog
* @param None
* @retval None
*/
static void ADC_Config(void)
{
/* Enable ADC1 clock */
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
/* Initialise and configure ADC1 */
ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 Channel 3 */
ADC_ChannelCmd(ADC1, ADC_Channel_3, ENABLE);
/* Calculate Threshold data value*/
HighThresholdData = (uint16_t)(((uint32_t)HIGH_THRESHOLD_VOLTAGE * 1000) / (uint32_t)ADC_RATIO) ;
LowThresholdData = (uint16_t)(((uint32_t)LOW_THRESHOLD_VOLTAGE * 1000) / (uint32_t)ADC_RATIO) ;
/* Configure Analog Watchdog selected channel and Thresholds */
ADC_AnalogWatchdogConfig(ADC1, ADC_AnalogWatchdogSelection_Channel3,
HighThresholdData,
LowThresholdData);
/* Enable Analog watchdog ADC1 Interrupt */
ADC_ITConfig(ADC1, ADC_IT_AWD, ENABLE);
/* Enable Interrupts */
enableInterrupts();
/* Start ADC1 Conversion using Software trigger*/
ADC_SoftwareStartConv(ADC1);
}
/*********************************************************************//**
* @brief c_entry: Main ADC program body
* @param[in] None
* @return None
**********************************************************************/
void c_entry(void)
{
volatile uint32_t adc_value, tmp;
uint8_t quit;
/* Initialize debug via UART0
* – 115200bps
* – 8 data bit
* – No parity
* – 1 stop bit
* – No flow control
*/
debug_frmwrk_init();
// print welcome screen
print_menu();
/* Initialize ADC ----------------------------------------------------*/
/*
* Init ADC pin that currently is being used on the board
*/
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);
/* Configuration for ADC :
* ADC conversion rate = 400Khz
*/
ADC_Init(LPC_ADC, 400000);
ADC_IntConfig(LPC_ADC, BRD_ADC_PREPARED_INTR, DISABLE);
ADC_ChannelCmd(LPC_ADC, BRD_ADC_PREPARED_CHANNEL, ENABLE);
while(1)
{
// Start conversion
ADC_StartCmd(LPC_ADC, ADC_START_NOW);
//Wait conversion complete
while (!(ADC_ChannelGetStatus(LPC_ADC, BRD_ADC_PREPARED_CHANNEL, ADC_DATA_DONE)));
adc_value = ADC_ChannelGetData(LPC_ADC, BRD_ADC_PREPARED_CHANNEL);
//Display the result of conversion on the UART
_DBG("ADC value on channel "); _DBD(BRD_ADC_PREPARED_CHANNEL);
_DBG(" is: "); _DBD32(adc_value); _DBG_("");
//delay
for(tmp = 0; tmp < 1000000; tmp++);
if(_DG_NONBLOCK(&quit) &&
(quit == 'Q' || quit == 'q'))
break;
}
_DBG_("Demo termination!!!");
ADC_DeInit(LPC_ADC);
}
/*
* Configure the pins according to their intended default function
*/
int _roboveroConfig(uint8_t * args)
{
int i;
UART_CFG_Type UARTConfigStruct;
PWM_TIMERCFG_Type PWMCfgDat;
configAllPins();
/*
* Enable 7 analog inputs
*/
ADC_Init(LPC_ADC, 200000);
for (i = 0; i < 4; i++)
ADC_ChannelCmd(LPC_ADC, i, ENABLE);
for (i = 5; i < 8; i++)
ADC_ChannelCmd(LPC_ADC, i, ENABLE);
/*
* Configure I2C0 for IMU communications
*/
I2C_Init(LPC_I2C0, 100000);
I2C_Cmd(LPC_I2C0, ENABLE);
/*
* Initialize CAN bus
*/
CAN_Init(LPC_CAN1, 100000);
/*
* Initialize UART1
*/
UART_ConfigStructInit(&UARTConfigStruct);
UARTConfigStruct.Baud_rate = 115200;
UART_Init((LPC_UART_TypeDef*)LPC_UART1, &UARTConfigStruct);
UART_TxCmd((LPC_UART_TypeDef*)LPC_UART1, ENABLE);
/*
* Initialize PWM
*
* Peripheral clock is 30MHz. Prescale by 30 cycles for 1us resolution.
*/
PWMCfgDat.PrescaleOption = PWM_TIMER_PRESCALE_TICKVAL;
PWMCfgDat.PrescaleValue = 30;
PWM_Init(LPC_PWM1, PWM_MODE_TIMER, &PWMCfgDat);
return 0;
}
// FIXME: de qAnalogInit is not really necessary, but without it consecutive readings are faulty (the second one is corrupted)
// Maybe a BURST mode is preferible in this case but only 2 analogs are beign used right now.
uint16_t qAnalog_Read(qAnalogInput * q){
uint16_t ret;
qAnalog_Init();
ADC_ChannelCmd(LPC_ADC,q->adcChannel,ENABLE);
ADC_StartCmd(LPC_ADC,ADC_START_NOW);
//Wait conversion complete
while (!(ADC_ChannelGetStatus(LPC_ADC,q->adcChannel,ADC_DATA_DONE)));
ret = ADC_ChannelGetData(LPC_ADC,q->adcChannel);
ADC_ChannelCmd(LPC_ADC,q->adcChannel,DISABLE);
return ret;
}
void EINT3_IRQHandler(void)
{
if (GPIO_GetIntStatus(1, 10, 1))
{
GPIO_ClearInt(2,(1<<10));
toggle=~toggle;
#ifdef MCB_LPC_1768_ADC_BURST_MULTI
if(toggle)
{
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_3,ENABLE);
FIO_ByteSetValue(1, 3, POLL_LED);
}
else
{
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_3,DISABLE);
FIO_ByteClearValue(1, 3, POLL_LED);
}
#endif
}
}
/******************************************************************************
*
* Description:
* Initialize the trim potentiometer, i.e. ADC connected to TrimPot on
* Base Board.
*
*****************************************************************************/
void trimpot_init(void)
{
// pinsel for AD0.2 on p0.25
PINSEL_ConfigPin (0, 25, 1);
PINSEL_SetAnalogPinMode (0, 25, 1);
ADC_Init(LPC_ADC, 400000);
ADC_IntConfig(LPC_ADC, ADC_ADINTEN2, DISABLE);
ADC_ChannelCmd(LPC_ADC, ADC_CH_TRIMPOT, ENABLE);
}
/**
* @brief Configure ADC peripheral
* @param None
* @retval None
*/
static void ADC_Config(void)
{
/* Initialise and configure ADC1 */
ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 Channels 3 */
ADC_ChannelCmd(ADC1, ADC_Channel_3, ENABLE); /* connected to potentiometer */
}
void ADC_InitChannel(int i){
PINSEL_CFG_Type pinCfg;
pinCfg.Funcnum = 1;
pinCfg.OpenDrain = 0;
pinCfg.Pinmode = 0;
pinCfg.Portnum = 0;
pinCfg.Pinnum = 23 + i;
PINSEL_ConfigPin(&pinCfg);
ADC_Init(LPC_ADC, 200000);
ADC_IntConfig(LPC_ADC, i, DISABLE);
ADC_ChannelCmd(LPC_ADC, i, ENABLE);
}
void init_adc(void) {
PINSEL_CFG_Type PinCfg;
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = PINSEL_PINMODE_PULLUP;
PinCfg.Pinnum = 24;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
ADC_Init(LPC_ADC, 10000);
ADC_IntConfig(LPC_ADC, ADC_ADINTEN0, DISABLE);
ADC_ChannelCmd(LPC_ADC, ADC_CHANNEL_1, ENABLE);
}
/*
-Pre-Reqs: None
-Desc: Initalise ADC at pin 30, mbed pin 19
-Input: None
-Output: None
-*/
void setupADC(){
//Setup for channel 0
PINSEL_CFG_Type ADCPinCfg;
ADCPinCfg.Funcnum = 3;
ADCPinCfg.OpenDrain = 0;
ADCPinCfg.Pinmode = 0;
ADCPinCfg.Pinnum = 30;
ADCPinCfg.Portnum = 1;
PINSEL_ConfigPin(&ADCPinCfg);
ADC_Init(LPC_ADC,100);
ADC_ChannelCmd(LPC_ADC,4,ENABLE);
ADC_StartCmd(LPC_ADC,ADC_START_NOW);
}
/*********************************************************************//**
* @brief Print menu
* @param[in] None
* @return None
**********************************************************************/
void EINT0_IRQHandler(void)
{
EXTI_ClearEXTIFlag(EXTI_EINT0);
toggle = ((toggle == TRUE) ? FALSE:TRUE);
#ifdef LPC177x_8x_ADC_BURST_MULTI
if(toggle)
{
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_n,ENABLE);
//Turn on LED -> indicate that extended channel was enable
GPIO_ClearValue(LED_PORT, LED_PIN);
}
else
{
ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_n,DISABLE);
// Turn off LED ->indicate that extended channel was disable
GPIO_SetValue(LED_PORT, LED_PIN);
}
#endif
}
/**
* @brief Main Program body
*/
int c_entry(void)
{
PINSEL_CFG_Type PinCfg;
uint32_t adc_value;
/*
* Initialize debug via UART
*/
debug_frmwrk_init();
// print welcome screen
print_menu();
/*
* 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);
/* Configuration for ADC :
* Frequency at 1Mhz
* ADC channel 2, no Interrupt
*/
ADC_Init(LPC_ADC, 1000000);
ADC_IntConfig(LPC_ADC,ADC_ADINTEN2,DISABLE);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_2,ENABLE);
while(1)
{
// Start conversion
ADC_StartCmd(LPC_ADC,ADC_START_NOW);
//Wait conversion complete
while (!(ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_2,ADC_DATA_DONE)));
adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_2);
//Display the result of conversion on the UART0
_DBG("ADC value on channel 2: ");
_DBD32(adc_value);
_DBG_("");
//delay 1s
Timer_Wait(1000);
}
ADC_DeInit(LPC_ADC);
return 1;
}
/**
* @brief Configure ADC peripheral
* @param None
* @retval None
*/
static void ADC_Config(void)
{
/* Initialise and configure ADC1 */
ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_1);
/* Configure ADC1 to measure the analog voltage available on slow channels */
/* Slow channel group configuration: Channel 22 (PD0) */
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_192Cycles);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 Channel 22: PD0 */
ADC_ChannelCmd(ADC1, ADC_Channel_22, ENABLE);
}
/**
* @brief Configure ADC peripheral
* @param None
* @retval None
*/
static void ADC_Config(void)
{
/* Initialise and configure ADC1 */
ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 Channel 3 */
ADC_ChannelCmd(ADC1, ADC_Channel_5, ENABLE);
/* Enable End of conversion ADC1 Interrupt */
//ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);
}
void ADC_init()
{
PINSEL_CFG_Type PinCfg;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Funcnum = 3;
PinCfg.Portnum = 1;
PinCfg.Pinnum = 30;
PINSEL_ConfigPin(&PinCfg);
ADC_Init(LPC_ADC, 20000);
ADC_ChannelCmd(LPC_ADC, 4, ENABLE);
ADC_ChannelGetData(LPC_ADC, 4);
}
static void platform_setup_adcs()
{
unsigned id;
for( id = 0; id < NUM_ADC; id ++ )
adc_init_ch_state( id );
NVIC_SetPriority(ADC_IRQn, ((0x01<<3)|0x01));
ADC_Init(LPC_ADC, 13000000);
// Default enables CH0, disable channel
ADC_ChannelCmd( LPC_ADC, 0, DISABLE );
// Default enables ADC interrupt only on global, switch to per-channel
ADC_IntConfig( LPC_ADC, ADC_ADGINTEN, DISABLE );
platform_adc_set_clock( 0, 0 );
}
int _analogReadAll(uint8_t * args)
{
uint8_t start_mode = 1; //Start now
uint8_t adc_data_done = 1; //Data_done
int pin[]={0,2,3};
int n,nb_pin=3;
unsigned int adc_values[3];
for(n=0;n<nb_pin;n++)
{
ADC_Init(LPC_ADC, 200000);
ADC_ChannelCmd(LPC_ADC, pin[n], ENABLE);
ADC_StartCmd(LPC_ADC, start_mode);
while( ! ADC_ChannelGetStatus(LPC_ADC, pin[n], adc_data_done))
{;}
adc_values[n]= ADC_ChannelGetData(LPC_ADC, pin[n]);
}
sprintf( (char*) str, "%x %x %x\r\n", adc_values[0], adc_values[1], adc_values[2]);
writeUSBOutString(str);
return 0;
}
uint16_t getADC(int channel)
{
uint16_t adc_value;
uint16_t adc_value1;
uint16_t adc_value2;
// Start conversion
ADC_StartCmd(LPC_ADC,ADC_START_NOW);
//Wait conversion complete
ADC_IntConfig(LPC_ADC,ADC_ADINTEN2,RESET);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_2,ENABLE);
while (!(ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_2,ADC_DATA_DONE)));
adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_2);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_2,DISABLE);
ADC_IntConfig(LPC_ADC,ADC_ADINTEN1,RESET);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_1,ENABLE);
while (!(ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_1,ADC_DATA_DONE)));
adc_value1 = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_1);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_1,DISABLE);
ADC_IntConfig(LPC_ADC,ADC_ADINTEN0,RESET);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_0,ENABLE);
while (!(ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_0,ADC_DATA_DONE)));
adc_value2 = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_0);
ADC_ChannelCmd(LPC_ADC,ADC_CHANNEL_0,DISABLE);
if (channel == 0)
{
return adc_value;
}
if (channel == 1)
{
return adc_value1;
}
if (channel == 2)
{
return adc_value2;
}
else
{
return 0;
}
}
/*********************************************************************//**
* @brief c_entry: Main program body
* @param[in] None
* @return None
**********************************************************************/
void c_entry (void)
{
EXTI_InitTypeDef EXTICfg;
GPIO_Init();
/* Initialize debug via UART0
* – 115200bps
* – 8 data bit
* – No parity
* – 1 stop bit
* – No flow control
*/
debug_frmwrk_init();
PINSEL_ConfigPin(2, 10,1);
ADC_Init(LPC_ADC, 100);
ADC_IntConfig(LPC_ADC, BRD_ADC_PREPARED_INTR, ENABLE);
ADC_ChannelCmd(LPC_ADC, BRD_ADC_PREPARED_CHANNEL, ENABLE);
GPIO_SetDir(BRD_LED_1_CONNECTED_PORT, BRD_LED_1_CONNECTED_MASK, GPIO_DIRECTION_OUTPUT);
GPIO_SetDir(BRD_LED_2_CONNECTED_PORT, BRD_LED_2_CONNECTED_MASK, GPIO_DIRECTION_OUTPUT);
/* Initialize External 0 interrupt */
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);
#if (INT_MODE == 0) //same group, different sub-levels (Tail-chaining example)
//sets group priorities: 8 - subpriorities: 3
NVIC_SetPriorityGrouping(4);
//000:10 (bit 7:3) assign eint0 to group 0, sub-priority 2 within group 0
NVIC_SetPriority(EINT0_IRQn, 2);
NVIC_SetPriority(ADC_IRQn, 0x01);
#else //different group - (Late-arriving example) ==================================================
//sets group priorities: 8 - subpriorities: 3
NVIC_SetPriorityGrouping(4);
//000:00 (bit 7:3) assign eint0 to group 0, sub-priority 0 within group 0
NVIC_SetPriority(EINT0_IRQn, 0);
NVIC_SetPriority(ADC_IRQn, 0x04);
#endif
NVIC_EnableIRQ(EINT0_IRQn);
/* Enable ADC in NVIC */
NVIC_EnableIRQ(ADC_IRQn);
while(1)
{
// Start conversion
ADC_StartCmd(LPC_ADC, ADC_START_NOW);
/* Enable ADC in NVIC */
NVIC_EnableIRQ(ADC_IRQn);
}
}