adc_interrupt_2ch.c File Reference

#include "fw_hal.h"

Go to the source code of this file.

Functions
	INTERRUPT (ADC_Routine, EXTI_VectADC)
void	main (void)

Variables
uint8_t	pos
uint16_t	res [2]

Function Documentation

INTERRUPT()

INTERRUPT	(	ADC_Routine	,
		EXTI_VectADC
	)

Uncomment these lines in high speed ADC GPIO_P1_SetMode(GPIO_Pin_1, GPIO_Mode_InOut_OD); GPIO_P1_SetMode(GPIO_Pin_1, GPIO_Mode_Input_HIP);

Uncomment these lines in high speed ADC GPIO_P1_SetMode(GPIO_Pin_2, GPIO_Mode_InOut_OD); GPIO_P1_SetMode(GPIO_Pin_2, GPIO_Mode_Input_HIP);

Definition at line 35 of file adc_interrupt_2ch.c.

{
    ADC_ClearInterrupt();
    res[pos] = ADC_RESL;
    res[pos] |= (ADC_RES & 0x0F) << 8;
    // Restart ADC for continuous sampling
    pos = (pos+1) & 0x1;
    if (pos == 0)
    {
        ADC_SetChannel(0x01);
    }
    else
    {
        ADC_SetChannel(0x02);
    }
    ADC_Start();
}

main()

void main

(

void

)

Definition at line 63 of file adc_interrupt_2ch.c.

{
    SYS_SetClock();
    // For debug print
    UART1_Config8bitUart(UART1_BaudSource_Timer2, HAL_State_ON, 115200);
    // Channel: ADC1
    ADC_SetChannel(0x01);
    // ADC Clock = SYSCLK / 2 / (1+15) = SYSCLK / 32
    ADC_SetClockPrescaler(0x0F);
    // Right alignment, high 2-bit in ADC_RES, low 8-bit in ADC_RESL
    ADC_SetResultAlignmentRight();
    // Enable interrupts
    EXTI_Global_SetIntState(HAL_State_ON);
    EXTI_ADC_SetIntState(HAL_State_ON);
    // Turn on ADC power
    ADC_SetPowerState(HAL_State_ON);
    // Set ADC1(P1.1), ADC2(P1.2) HIP
    GPIO_P1_SetMode(GPIO_Pin_1|GPIO_Pin_2, GPIO_Mode_Input_HIP);
    // Start ADC
    ADC_Start();
 
    while(1)
    {
        UART1_TxString("Result: ");
        UART1_TxHex(res[0] >> 8);
        UART1_TxHex(res[0] & 0xFF);
        UART1_TxChar(' ');
        UART1_TxHex(res[1] >> 8);
        UART1_TxHex(res[1] & 0xFF);
        UART1_TxString("\r\n");
        SYS_Delay(100);
    }
}

Variable Documentation

pos

uint8_t pos

STC8H3K64S2 AGrnd -> GND AVcc -> VCC AVref -> VCC Vcc -> VCC Gnd -> GND ADC1 -> Test voltage

STC8H1K08 AVref -> VCC Vcc -> VCC Gnd -> GND ADC1 -> Test voltage

Definition at line 32 of file adc_interrupt_2ch.c.

res

uint16_t res[2]

Definition at line 33 of file adc_interrupt_2ch.c.