topic Re: KV11z-DAC Output Enable in Kinetis Microcontrollers

KV11z-DAC Output Enable

CMooN — Mon, 25 Jul 2022 05:27:57 GMT

Hello,

Can someone please help me about how to enable DAC output of KV11z ? I am using dac_basic from SDK. Thanks for any help.

Re: KV11z-DAC Output Enable

Robin_Shen — Mon, 25 Jul 2022 09:36:09 GMT

Hi CMooN,

Did you follow the readme.txt of dac_basic example? Please input the value from terminal.

Best Regards,
Robin
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Re: KV11z-DAC Output Enable

CMooN — Mon, 25 Jul 2022 10:32:35 GMT

Hi Robin,

Thanks for your answer. Can you also inform me about the buffer ? I do not understand about why we use buffer and what is the function of the buffer ? Also, I do not understant what is the function of the following code ?

void DAC_SetBufferValue(DAC_Type *base, uint8_t index, uint16_t value)
{
assert(index < DAC_DATL_COUNT);

base->DAT[index].DATL = (uint8_t)(0xFFU & value); /* Low 8-bit. */
base->DAT[index].DATH = (uint8_t)((0xF00U & value) >> 8); /* High 4-bit. */

Re: KV11z-DAC Output Enable

CMooN — Mon, 25 Jul 2022 12:03:00 GMT

Also, I want you to ask how can I control the change of the voltage with interrupt timer ? @Robin_Shen

Re: KV11z-DAC Output Enable

Robin_Shen — Mon, 25 Jul 2022 15:12:09 GMT

Please read the relevant chapter of the Kinetis KV11: 75 MHz Arm Cortex-M0+ 64/128 KB Flash (32-64 pin)

There is description about DAC_SetBufferValue.

Please refer to the other two examples in the SDK: