BLE SAADC INTERRUPT BASE

RE: BLE SAADC INTERRUPT BASE

Jørgen Holmefjord — Thu, 10 Sep 2020 08:51:57 GMT

I linked to the IRQHandler in the SAADC driver in my previous comment.

RE: BLE SAADC INTERRUPT BASE

Jørgen Holmefjord — Thu, 10 Sep 2020 08:51:02 GMT

If you are referring to the interrupt from the SAADC, you should place the code in the saadc_callback().

The time between each timer event is given by the SAADC_SAMPLE_RATE.

RE: BLE SAADC INTERRUPT BASE

faizan12 — Thu, 10 Sep 2020 07:51:27 GMT

Hi!

I also wanted to ask that u have written previously IRQ handler calls the saadc callback where is that IRQ handdler which calls saadc callback???

RE: BLE SAADC INTERRUPT BASE

faizan12 — Thu, 10 Sep 2020 06:06:23 GMT

If i want that data on ble and uart should be sent when interrupt occur where should i paste the code of ble and uart.Also where to set the timer timing to make tinterrupt early or late.????

RE: BLE SAADC INTERRUPT BASE

Jørgen Holmefjord — Wed, 09 Sep 2020 09:37:06 GMT

Hi,

In saadc_init(), the SAADC peripheral is configured along with buffers for storing samples directly in RAM During init, the interrupt for END event is enabled in the SAADC driver.. A timer is configured along with PPI, to trigger the SAADC sample task at a regular interval, without any CPU intervention. Then the SAADC sample task has been triggered enough times to fill the buffer, an END event is generated by the peripheral, triggering the IRQHandler in the SAADC driver. The IRQHandler calls the saadc_callback() where samples are processed and buffer are setup for re-use.

Best regards,
Jørgen

RE: BLE SAADC INTERRUPT BASE

faizan12 — Tue, 08 Sep 2020 16:22:14 GMT

can u help to understand where is Interrupt defined in this example and how its using interrupt and where is its interrupt handler. i am using the same example but i want that when interrupt occurs using ticks of timer it sends data over ble and uart also .i thnk its only doind adc on interrupt but i also dont knoe where.???

RE: BLE SAADC INTERRUPT BASE

Jørgen Holmefjord — Tue, 08 Sep 2020 13:41:07 GMT

Hi,

You can find a interrupt based SAADC + BLE example in this GitHub repository. The example samples multiple SAADC input channels, but you can disable the channels that you do not need.

Best regards,
Jørgen