ads1118模拟spi驱动问题

kluze

ads1118模拟spi驱动问题 [复制链接]

ads1118驱动，模拟spi，相关代码如下

unsigned int spi_sendRecvWord(unsigned int c) { unsigned int data = 0; unsigned int shift = 0x8000; int i = 0; //while(!(ADS1118_DO_X)) ADS1118_SCK_0; delay_us(120); for ( i = 0; i < 16; i++) { if (c & shift) {ADS1118_DI_1;} else {ADS1118_DI_0;} if(ADS1118_DO_X) data|=shift; ADS1118_SCK_1; delay_us(60); //if(ADS1118_DO_X) //data|=shift; ADS1118_SCK_0; delay_us(60); (shift) >>= 1; }

return data; }

float ADS1118_V(void) { unsigned int adc=0; unsigned int Config_Register; float value=0; Config_Register =0x8393; ADS1118_CS_0; while((ADS1118_DO_X)) {ADS1118_SCK_1; delay_us(60); ADS1118_SCK_0; delay_us(60); } delay_us(100); adc = spi_sendRecvWord(Config_Register); spi_sendRecvWord(0x0000); /* adc = spi_sendRecvWord(Config_Register); value=adc; return value; }

具体问题是无论我怎么改变写入控制字以及测量输入量，dout返回的都是如下错误波形，大家看看是什麽情况

图一：黄sclk，蓝dout

图二黄sclk，蓝din

图三，黄dout，蓝din

kluze

自己顶

kluze

没人再顶，不能沉了

成都回锅肉

我也刚玩了ADS1118

kkmcu

成都回锅肉 发表于 2014-8-9 14:00
我也刚玩了ADS1118

求份程序，看的我好头大...