Proteus+LM3S+keil+ADC寄存器版本例程

/************************************************* 实验现象 adc0可以设置电压值，其值会显示在终端上 ****************************************************/ #include "lm3s316.h" void clock_init() { SYSCTL_RCC_R&=0x00; SYSCTL_RCC_R|=1<<11; SYSCTL_RCC_R&=~(1<<22) ; SYSCTL_RCC_R|=0xe<<6; SYSCTL_RCC_R&=~(1<<12) ; SYSCTL_RCC_R&=~(1<<13) ; SYSCTL_RCC_R|=7<<23|1<<22; while(!(SYSCTL_RIS_R&0x40)); SYSCTL_RCC_R&=~(1<<11); } void uart_init() { SYSCTL_RCGC2_R|=1<<0; GPIO_PORTA_AFSEL_R=0x03; GPIO_PORTA_ODR_R=0x03; GPIO_PORTA_DEN_R=0x03; GPIO_PORTA_PUR_R=0x03; SYSCTL_RCGC1_R|=1<<0; UART0_CTL_R&=~(1<<0); UART0_IBRD_R=162; UART0_FBRD_R=48; UART0_LCRH_R|=3<<5; UART0_CTL_R|=1<<0; } void tim_init() { SYSCTL_RCGC1_R|=1<<16; TIMER0_CTL_R=0; TIMER0_CFG_R=0; TIMER0_TAMR_R=2; TIMER0_TAILR_R=0x00555555; } void adc_init() { SYSCTL_RCGC0_R|=1<<16|1<<8; ADC0_ACTSS_R=0x00; ADC0_EMUX_R=0x05; ADC0_SSMUX0_R=0x1; ADC0_SSCTL0_R=0x6; ADC0_ACTSS_R=0x01; } int main() { unsigned int temp; unsigned char tmp[3]; clock_init(); uart_init(); tim_init(); adc_init(); TIMER0_CTL_R|=1<<0|1<<5;//用定时器触发要使能TAOTE // ADC0_PSSI_R=0x01;//这个是跟‘控制器’触发关联的 while(!(ADC0_RIS_R)&0x01); temp=ADC0_SSFIFO0_R/3.41; tmp[0]=temp%10; tmp[1]=temp/10%10; tmp[2]=temp/100; UART0_DR_R=tmp[2]; while(!(UART0_FR_R&0x80)); UART0_DR_R=tmp[0]+(tmp[1]<<4); while(!(UART0_FR_R&0x80)); while(1); }