You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
#include "SWM221.h"
|
|
|
|
void SerialInit(void);
|
|
|
|
#define ACMP_VN_DAC
|
|
|
|
int main(void)
|
|
{
|
|
SystemInit();
|
|
|
|
SerialInit();
|
|
|
|
PORT_Init(PORTB, PIN6, PORTB_PIN6_ACMP0_INP0, 0);
|
|
PORT_Init(PORTB, PIN5, PORTB_PIN5_ACMP0_INP1, 0);
|
|
PORT_Init(PORTB, PIN4, PORTB_PIN4_ACMP0_INP2, 0);
|
|
PORT_Init(PORTB, PIN3, PORTB_PIN3_ACMP0_INN, 0);
|
|
PORT_Init(PORTA, PIN14, PORTA_PIN14_ACMP1_INP, 0);
|
|
PORT_Init(PORTA, PIN12, PORTA_PIN12_ACMP1_INN, 0);
|
|
|
|
SYS->ACMP0CR |= (1 << SYS_ACMP0CR_EN_Pos) |
|
|
(1 << SYS_ACMP0CR_HYS_Pos) |
|
|
#ifdef ACMP_VN_DAC
|
|
(1 << SYS_ACMP0CR_VNSEL_Pos) |
|
|
#else
|
|
(0 << SYS_ACMP0CR_VNSEL_Pos) |
|
|
#endif
|
|
(0 << SYS_ACMP0CR_VPSEL_Pos) |
|
|
(1 << SYS_ACMP0CR_IE_Pos);
|
|
|
|
#ifdef ACMP_VN_DAC
|
|
SYS->ACMPCR = (1 << SYS_ACMPCR_DACEN_Pos) |
|
|
(0 << SYS_ACMPCR_DACVR_Pos) |
|
|
(100 << SYS_ACMPCR_DACDR_Pos); // Vout = 100 / 255 * VDD
|
|
#endif
|
|
|
|
NVIC_EnableIRQ(ACMP_IRQn);
|
|
|
|
while(1==1)
|
|
{
|
|
printf("ACMP0->OUT = %d\r\n", (SYS->ACMPSR & SYS_ACMPSR_CMP0OUT_Msk) ? 1 : 0);
|
|
|
|
for(int i = 0; i < SystemCoreClock/10; i++) __NOP();
|
|
}
|
|
}
|
|
|
|
|
|
void ACMP_Handler(void)
|
|
{
|
|
if(SYS->ACMPSR & SYS_ACMPSR_CMP0IF_Msk)
|
|
{
|
|
SYS->ACMPSR = (1 << SYS_ACMPSR_CMP0IF_Pos);
|
|
|
|
printf("ACMP0 Interrupt Happened\r\n");
|
|
}
|
|
}
|
|
|
|
|
|
void SerialInit(void)
|
|
{
|
|
UART_InitStructure UART_initStruct;
|
|
|
|
PORT_Init(PORTA, PIN0, PORTA_PIN0_UART0_RX, 1); //GPIOA.0配置为UART0 RXD
|
|
PORT_Init(PORTA, PIN1, PORTA_PIN1_UART0_TX, 0); //GPIOA.1配置为UART0 TXD
|
|
|
|
UART_initStruct.Baudrate = 57600;
|
|
UART_initStruct.DataBits = UART_DATA_8BIT;
|
|
UART_initStruct.Parity = UART_PARITY_NONE;
|
|
UART_initStruct.StopBits = UART_STOP_1BIT;
|
|
UART_initStruct.RXThreshold = 3;
|
|
UART_initStruct.RXThresholdIEn = 0;
|
|
UART_initStruct.TXThreshold = 3;
|
|
UART_initStruct.TXThresholdIEn = 0;
|
|
UART_initStruct.TimeoutTime = 10;
|
|
UART_initStruct.TimeoutIEn = 0;
|
|
UART_Init(UART0, &UART_initStruct);
|
|
UART_Open(UART0);
|
|
}
|
|
|
|
/******************************************************************************************************************************************
|
|
* 函数名称: fputc()
|
|
* 功能说明: printf()使用此函数完成实际的串口打印动作
|
|
* 输 入: int ch 要打印的字符
|
|
* FILE *f 文件句柄
|
|
* 输 出: 无
|
|
* 注意事项: 无
|
|
******************************************************************************************************************************************/
|
|
int fputc(int ch, FILE *f)
|
|
{
|
|
UART_WriteByte(UART0, ch);
|
|
|
|
while(UART_IsTXBusy(UART0));
|
|
|
|
return ch;
|
|
}
|