void osSuspendAllTasks(void)
{
#if !defined(osCMSIS_RTX)
//Make sure the operating system is running
if(osKernelRunning())
{
//Suspend all tasks
osThreadSuspendAll();
}
#endif
}
/*******************************************************************************
* º¯ÊýÃû : ADS1222_AdRead
* Ãè Êö : »ñÈ¡ADS1222£®Ò»´ÎÍêÕûµÄÊý¾Ý´«ÊäΪ24bit£¬¸ßλÏȳö
* Êä Èë : chipId: ads1222оƬ±àºÅ
* channel: ads1222оƬͨµÀºÅ
* Êä ³ö : ÎÞ
* ·µ »Ø Öµ: ¶ÁÈ¡24bit ÔʼADÖµ
*******************************************************************************/
Ads1222Err ADS1222_AdRead(u32* data_a, u32* data_b, u32* data_c, u32* data_d)
{
u8 i = 0;
ADS1222_DOUT_IPU(0x0f);
// enter critical section
// first will disable global interrupt
// then will suspend all threads
// taskENTER_CRITICAL();
osThreadSuspendAll();
*data_a = 0;
*data_b = 0;
*data_c = 0;
*data_d = 0;
for(i=0; i<24; i++)
{
// shift data
*data_a = *data_a << 1;
*data_b = *data_b << 1;
*data_c = *data_c << 1;
*data_d = *data_d << 1;
// sclk put high
ADS1222_A_SCLK_HIGH();
ADS1222_B_SCLK_HIGH();
ADS1222_C_SCLK_HIGH();
ADS1222_D_SCLK_HIGH();
delay_us(1);
// sclk put low
ADS1222_A_SCLK_LOW();
ADS1222_B_SCLK_LOW();
ADS1222_C_SCLK_LOW();
ADS1222_D_SCLK_LOW();
delay_us(1);
// read bit
if (ADS1222_A_DOUT_IN() == GPIO_PIN_SET)
{
*data_a |= 0x00000001; //or adValue+=1;
}
if (ADS1222_B_DOUT_IN() == GPIO_PIN_SET)
{
*data_b |= 0x00000001; //or adValue+=1;
}
if (ADS1222_C_DOUT_IN() == GPIO_PIN_SET)
{
*data_c |= 0x00000001; //or adValue+=1;
}
if (ADS1222_D_DOUT_IN() == GPIO_PIN_SET)
{
*data_d |= 0x00000001; //or adValue+=1;
}
}
// sclk put high
ADS1222_A_SCLK_HIGH();
ADS1222_B_SCLK_HIGH();
ADS1222_C_SCLK_HIGH();
ADS1222_D_SCLK_HIGH();
delay_us(1);
// sclk put low
ADS1222_A_SCLK_LOW();
ADS1222_B_SCLK_LOW();
ADS1222_C_SCLK_LOW();
ADS1222_D_SCLK_LOW();
delay_us(1);
// exit critical section
// first will resume all threads
// then will re-enable global interrupt
osThreadResumeAll();
// taskEXIT_CRITICAL();
return Ads1222Err_NoErr;
}