Question

我正在处理一项任务，即读取焊接到cc2530电池板上GPIO引脚的传感器产生的值。三种不同类型的传感器焊接在其上;温度（模拟，输出电压），光（模拟，输出频率）和气压计（模拟）。

我已经能够成功读取温度并正确显示数字（示例在contiki git repo中提供）但我无法手动配置GPIO引脚以从光电二极管读取。

请帮助

P0SEL &= ~0x04; /* Set as GPIO */
P0DIR &= ~0x04; /* Set as Input */
P0INP |= 0x04; /* Set as tri-state */

Answer 1

找到它。

这里是一个从cc2530上的引脚读取的示例代码：

static void ReadLightSensor(void)
 {
                    //select pin in hex form
        P0SEL &= ~0x10; /* Set pin (sample) as GPIO */
        P0DIR &= ~0x10; /* Set pin as input*/
        P0INP |= 0x10;  /* Set as tri-state*/
        APCFG |= 0x10;  /* configure ADC on pin*/

        ADCCON3 = 0x34; /*This represents the paramters passed into ADCCON3*/

        while (!ADCIF);
        ADCIF = 0;

        tv = ADCL;
        tv |= (((unsigned short) ADCH) << 8);
        tv >>= 4 ;
        lv = tv;
                    PRINTF("Pin reading = 0x%04x\n\r", lv);

从CC2530上的GPIO引脚读取

1 个答案: