I read adc value to control a led, but it doesm't work. this is my code.
in file drive.c
typedef struct
{
uint8_t clockDivide;
uint8_t sampleTime;
uint8_t resolution;
uint8_t inputClock;
uint8_t triggerType;
uint8_t voltageRef;
bool dmaEnable;
} adc_config_t;
typedef struct
{
uint8_t controlChannel;
uint8_t inputChannel;
bool enableInterrupt;
} adc_channel_t;
void ADC_strriger(){}
uint8_t ADC_Init(adc_config_t * adcConfig)
{
if (adcConfig == NULL)
{
return 1;
}
ADC0->CFG1 &= ~ADC_CFG1_ADIV_MASK;
ADC0->CFG1 |= ADC_CFG1_ADIV(adcConfig->clockDivide);
ADC0->CFG1 &= ~ADC_CFG1_MODE_MASK;
ADC0->CFG1 |= ADC_CFG1_MODE(adcConfig->resolution);
ADC0->CFG1 &= ~ADC_CFG1_ADICLK_MASK;
ADC0->CFG1 |= ADC_CFG1_ADICLK(adcConfig->inputClock);
ADC0->CFG2 &= ~ADC_CFG2_SMPLTS_MASK;
ADC0->CFG2 |= ADC_CFG2_SMPLTS(adcConfig->sampleTime);
ADC0->SC2 &= ~ADC_SC2_ADTRG_MASK;
ADC0->SC2 |= ADC_SC2_ADTRG(adcConfig->triggerType);
ADC0->SC2 &= ~ADC_SC2_REFSEL_MASK;
ADC0->SC2 |= ADC_SC2_REFSEL(adcConfig->voltageRef);
ADC0->SC2 &= ~ADC_SC2_DMAEN_MASK;
if (adcConfig->dmaEnable == true)
{
ADC0->SC2 |= ADC_SC2_DMAEN(1);
}
else ADC0->SC2 |= ADC_SC2_DMAEN(0);
return 0xFFu;
}
uint8_t ADC_ConfigChannel(adc_channel_t * adcChannel)
{
uint32_t tempVal;
if(adcChannel==NULL) return 1;
tempVal = ADC0->SC1[adcChannel->controlChannel];
tempVal &= ~ADC_SC1_ADCH_MASK;
tempVal |= ADC_SC1_ADCH(adcChannel->inputChannel);
tempVal &= ~ADC_SC1_AIEN_MASK;
if(adcChannel->enableInterrupt==true)
tempVal |= ADC_SC1_AIEN(1);
else tempVal |= ADC_SC1_AIEN(0);
ADC0->SC1[adcChannel->controlChannel] = tempVal;
return 0xFFu; // success
}
void ADC_WaitConversionComplete(void)
{
while(((ADC0->SC1[0] & ADC_SC1_COCO_MASK)>>ADC_SC1_COCO_SHIFT) == 0);
}
uint8_t Clear_GPIO(uint8_t pinNumber)
{
PTD->PCOR = (uint32_t)(1 << pinNumber);
return 0;
}
void ADC_StartConversion(uint8_t inputChannel)
{
adc_config_t adcConfig =
{
1,255,1,0,0,0,false
};
(void)ADC_Init(&adcConfig);
adc_channel_t adcChannel = {
0,inputChannel,0
};
(void)ADC_ConfigChannel(&adcChannel);
ADC_WaitConversionComplete();
}
uint8_t Set_GPIO(uint8_t pinNumber)
{
PTD->PSOR = (uint32_t)(1 << pinNumber);
return 0;
}
uint32_t ADC_GetConversionResult(uint8_t controlChannel)
{
return (uint32_t)(ADC0->R[controlChannel] & ADC_R_D_MASK);
}
void Init_GPIO(uint8_t pinNumber)
{
PCC-> PCCn[PCC_PORTD_INDEX] = PCC_PCCn_CGC_MASK;
PORTD->PCR[pinNumber] = PORT_PCR_MUX(1);
PTD->PDDR = (uint32_t)(1 << pinNumber);
PORTC->PCR[14]=PORT_PCR_MUX(0);
}
void ADC_ControlLight(uint8_t inputChannel)
{
Init_GPIO(15);
ADC_StartConversion(inputChannel);
uint32_t a=ADC_GetConversionResult(12);
if(a>=1024)Set_GPIO(15);
else Clear_GPIO(15);
}
/**********************************/
in file main.c
int appMain(void)
{
CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT,
g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);
CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);
PCC->PCCn[PCC_ADC0_INDEX] &=~ PCC_PCCn_CGC_MASK; /* Disable clock to change PCS */
PCC->PCCn[PCC_ADC0_INDEX] |= PCC_PCCn_PCS(1); /* PCS=1: Select SOSCDIV2 */
PCC->PCCn[PCC_ADC0_INDEX] |= PCC_PCCn_CGC_MASK; /* Enable bus clock in ADC */
Init_GPIO();
while(1) {
ADC_ControlLight();
}
}
