SAADC sampling rate

[MichelG]

I'd like to sample the SAADC at 1280Hz. The app_timer minimum seems to be 1ms (1000Hz). If I use continuous sampling by setting SAMPLERATE then the minimum rate seems to be 16MHz/2047 or 7.8kHz. That seems like quite a gap in available rates. Any ideas on how I should approach this? Thanks.

[Stefan Birnir Sverrisson]

Hi

There are some examples available here for the SAADC, with and without TIMER.

[akshaey]

when i try to run this it gives the following error i don't know why . thanks in advance

compiling ble_nus.c... "no source": Error: #5: cannot open source input file "............\components\ble\ble_services\ble_nus\ble_nus.c": No such file or directory ............\components\ble\ble_services\ble_nus\ble_nus.c: 0 warnings, 1 error compiling bsp.c... "no source": Error: #5: cannot open source input file "..........\bsp\bsp.c": No such file or directory ..........\bsp\bsp.c: 0 warnings, 1 error compiling ble_advdata.c... "no source": Error: #5: cannot open source input file "............\components\ble\common\ble_advdata.c": No such file or directory ............\components\ble\common\ble_advdata.c: 0 warnings, 1 error compiling ble_advertising.c... "no source": Error: #5: cannot open source input file "............\components\ble\ble_advertising\ble_advertising.c": No such file or directory ............\components\ble\ble_advertising\ble_advertising.c: 0 warnings, 1 error compiling main.c... ......\main.c(28): error: #5: cannot open source input file "nordic_common.h": No such file or directory #include "nordic_common.h" ......\main.c: 0 warnings, 1 error compiling bsp_btn_ble.c... "no source": Error: #5: cannot open source input file "..........\bsp\bsp_btn_ble.c": No such file or directory ..........\bsp\bsp_btn_ble.c: 0 warnings, 1 error compiling ble_conn_params.c... "no source": Error: #5: cannot open source input file "............\components\ble\common\ble_conn_params.c": No such file or directory ............\components\ble\common\ble_conn_params.c: 0 warnings, 1 error compiling nrf_drv_uart.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\uart\nrf_drv_uart.c": No such file or directory ............\components\drivers_nrf\uart\nrf_drv_uart.c: 0 warnings, 1 error compiling ble_srv_common.c... "no source": Error: #5: cannot open source input file "............\components\ble\common\ble_srv_common.c": No such file or directory ............\components\ble\common\ble_srv_common.c: 0 warnings, 1 error compiling pstorage.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\pstorage\pstorage.c": No such file or directory ............\components\drivers_nrf\pstorage\pstorage.c: 0 warnings, 1 error compiling nrf_drv_common.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\common\nrf_drv_common.c": No such file or directory ............\components\drivers_nrf\common\nrf_drv_common.c: 0 warnings, 1 error compiling nrf_drv_gpiote.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\gpiote\nrf_drv_gpiote.c": No such file or directory ............\components\drivers_nrf\gpiote\nrf_drv_gpiote.c: 0 warnings, 1 error compiling nrf_delay.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\delay\nrf_delay.c": No such file or directory ............\components\drivers_nrf\delay\nrf_delay.c: 0 warnings, 1 error compiling app_uart_fifo.c... "no source": Error: #5: cannot open source input file "............\components\libraries\uart\app_uart_fifo.c": No such file or directory ............\components\libraries\uart\app_uart_fifo.c: 0 warnings, 1 error compiling nrf_drv_ppi.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\ppi\nrf_drv_ppi.c": No such file or directory ............\components\drivers_nrf\ppi\nrf_drv_ppi.c: 0 warnings, 1 error compiling app_button.c... "no source": Error: #5: cannot open source input file "............\components\libraries\button\app_button.c": No such file or directory ............\components\libraries\button\app_button.c: 0 warnings, 1 error compiling nrf_drv_timer.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\timer\nrf_drv_timer.c": No such file or directory ............\components\drivers_nrf\timer\nrf_drv_timer.c: 0 warnings, 1 error compiling app_error.c... "no source": Error: #5: cannot open source input file "............\components\libraries\util\app_error.c": No such file or directory ............\components\libraries\util\app_error.c: 0 warnings, 1 error compiling app_error_weak.c... "no source": Error: #5: cannot open source input file "............\components\libraries\util\app_error_weak.c": No such file or directory ............\components\libraries\util\app_error_weak.c: 0 warnings, 1 error compiling nrf_saadc.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\hal\nrf_saadc.c": No such file or directory ............\components\drivers_nrf\hal\nrf_saadc.c: 0 warnings, 1 error compiling nrf_drv_saadc.c... "no source": Error: #5: cannot open source input file "............\components\drivers_nrf\saadc\nrf_drv_saadc.c": No such file or directory ............\components\drivers_nrf\saadc\nrf_drv_saadc.c: 0 warnings, 1 error compiling app_fifo.c... "no source": Error: #5: cannot open source input file "............\components\libraries\fifo\app_fifo.c": No such file or directory ............\components\libraries\fifo\app_fifo.c: 0 warnings, 1 error compiling app_timer.c... "no source": Error: #5: cannot open source input file "............\components\libraries\timer\app_timer.c": No such file or directory ............\components\libraries\timer\app_timer.c: 0 warnings, 1 error compiling fstorage.c... "no source": Error: #5: cannot open source input file "............\components\libraries\fstorage\fstorage.c": No such file or directory ............\components\libraries\fstorage\fstorage.c: 0 warnings, 1 error compiling retarget.c... "no source": Error: #5: cannot open source input file "............\components\libraries\uart\retarget.c": No such file or directory ............\components\libraries\uart\retarget.c: 0 warnings, 1 error compiling app_util_platform.c... "no source": Error: #5: cannot open source input file "............\components\libraries\util\app_util_platform.c": No such file or directory ............\components\libraries\util\app_util_platform.c: 0 warnings, 1 error compiling nrf_assert.c... "no source": Error: #5: cannot open source input file "............\components\libraries\util\nrf_assert.c": No such file or directory ............\components\libraries\util\nrf_assert.c: 0 warnings, 1 error compiling nrf_log.c... "no source": Error: #5: cannot open source input file "............\components\libraries\util\nrf_log.c": No such file or directory ............\components\libraries\util\nrf_log.c: 0 warnings, 1 error compiling RTT_Syscalls_KEIL.c... "no source": Error: #5: cannot open source input file "............\external\segger_rtt\RTT_Syscalls_KEIL.c": No such file or directory ............\external\segger_rtt\RTT_Syscalls_KEIL.c: 0 warnings, 1 error compiling SEGGER_RTT.c... "no source": Error: #5: cannot open source input file "............\external\segger_rtt\SEGGER_RTT.c": No such file or directory ............\external\segger_rtt\SEGGER_RTT.c: 0 warnings, 1 error compiling SEGGER_RTT_printf.c... "no source": Error: #5: cannot open source input file "............\external\segger_rtt\SEGGER_RTT_printf.c": No such file or directory ............\external\segger_rtt\SEGGER_RTT_printf.c: 0 warnings, 1 error compiling softdevice_handler.c... "no source": Error: #5: cannot open source input file "............\components\softdevice\common\softdevice_handler\softdevice_handler.c": No such file or directory ............\components\softdevice\common\softdevice_handler\softdevice_handler.c: 0 warnings, 1 error assembling arm_startup_nrf52.s... compiling system_nrf52.c... "._build\nrf52832_xxaa_s132.axf" - 1 Error(s), 0 Warning(s). Target not created. Build Time Elapsed: 00:00:02