CodeWarrior Development ToolsのトピックNeed help for configure ADC in K10

Need help for configure ADC in K10

sarath_gs — Mon, 20 Jan 2020 09:31:20 GMT

I am using K10 custom board , using codewarrior 10.4 RTOS MQX 4.0. may get an example code for configure ADC and get the value?

Re: Need help for configure ADC in K10

soledad — Mon, 20 Jan 2020 18:19:05 GMT

Hi,

You can use the MQX ADC example code, the ADC example shows usage of the ADC driver sampling analog values from two ADC channels.

You can find this example after install MQX in the following path:

C:\Freescale\Freescale_MQX_4_x\mqx\examples\adc

I hope this helps,

have a nice day!

Regards

Soledad

Re: Need help for configure ADC in K10

sarath_gs — Tue, 21 Jan 2020 04:30:12 GMT

Thank you . Please check the below code is good on not.

void ADC_Init(void)
{
/* SIM_SCGC6: ADC0=1 */
SIM_SCGC6 |= SIM_SCGC6_ADC0_MASK;

/* PORTB_PCR3: ISF=0,MUX=0 */
PORTB_PCR3 &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07)));
ADC0_CFG1 = ADC_CFG1_ADIV(0x01) |
ADC_CFG1_ADLSMP_MASK |
ADC_CFG1_MODE(0x03) |
ADC_CFG1_ADICLK(0x00);
/* ADC0_CFG2: ADACKEN=0,ADHSC=0,ADLSTS=2 */
ADC0_CFG2 = (uint32_t)((ADC0_CFG2 & (uint32_t)~(uint32_t)(
ADC_CFG2_ADACKEN_MASK |
ADC_CFG2_ADHSC_MASK |
ADC_CFG2_ADLSTS(0x01)
)) | (uint32_t)(
ADC_CFG2_ADLSTS(0x02)
));
/* ADC0_SC2: ??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,ADACT=0,ADTRG=0,ACFE=0,ACFGT=0,ACREN=0,DMAEN=0,REFSEL=0 */
ADC0_SC2 = ADC_SC2_REFSEL(0x00);
/* ADC0_SC3: ??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,CAL=0,CALF=1,??=0,??=0,ADCO=0,AVGE=0,AVGS=0 */
ADC0_SC3 = (ADC_SC3_CALF_MASK | ADC_SC3_AVGS(0x00));
}
/******************************************************************************
.Purpose : For getting the ADC value from register
.Param : Pointer to buffer to get the value.
.Returns : NULL
.Note :
******************************************************************************/
void Get_ADCValue(uint_32 *iBuffer)
{
uint_32 iCount;
/*Getting the ADC value from register*/
ADC0_RA = ADC_R_D(0);

iCount = ADC0_RA;
*iBuffer = iCount;
}

Re: Need help for configure ADC in K10

soledad — Wed, 22 Jan 2020 17:47:05 GMT

Hi,

You are not using the MQX drivers, if you are using MQX I suggest you use the MQX drivers, please check the following document:

https://community.nxp.com/docs/DOC-333348

Regarding the code, I cannot find a particular issue with the code, however it is necessary you test the application.

Regards

Soledad