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arduino-nRF5
Commit 233eb177 authored by Sandeep Mistry's avatar Sandeep Mistry
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Set SAADC channels PSEL* to SAADC_CH_PSELP_PSELP_NC before analogRead

parent 4cc0744b
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Showing with 8 additions and 3 deletions
cores/nRF5/wiring_analog_nRF52.c
View file @ 233eb177
......@@ -163,14 +163,19 @@ uint32_t analogRead( uint32_t ulPin )
NRF_SAADC->RESOLUTION = saadcResolution;
NRF_SAADC->ENABLE = (SAADC_ENABLE_ENABLE_Enabled << SAADC_ENABLE_ENABLE_Pos);
NRF_SAADC->CH[pin].CONFIG = ((SAADC_CH_CONFIG_RESP_Bypass << SAADC_CH_CONFIG_RESP_Pos) & SAADC_CH_CONFIG_RESP_Msk)
for (int i = 0; i < 8; i++) {
NRF_SAADC->CH[i].PSELN = SAADC_CH_PSELP_PSELP_NC;
NRF_SAADC->CH[i].PSELP = SAADC_CH_PSELP_PSELP_NC;
}
NRF_SAADC->CH[0].CONFIG = ((SAADC_CH_CONFIG_RESP_Bypass << SAADC_CH_CONFIG_RESP_Pos) & SAADC_CH_CONFIG_RESP_Msk)
| ((SAADC_CH_CONFIG_RESP_Bypass << SAADC_CH_CONFIG_RESN_Pos) & SAADC_CH_CONFIG_RESN_Msk)
| ((SAADC_CH_CONFIG_GAIN_Gain1 << SAADC_CH_CONFIG_GAIN_Pos) & SAADC_CH_CONFIG_GAIN_Msk)
| ((saadcReference << SAADC_CH_CONFIG_REFSEL_Pos) & SAADC_CH_CONFIG_REFSEL_Msk)
| ((SAADC_CH_CONFIG_TACQ_3us << SAADC_CH_CONFIG_TACQ_Pos) & SAADC_CH_CONFIG_TACQ_Msk)
| ((SAADC_CH_CONFIG_MODE_SE << SAADC_CH_CONFIG_MODE_Pos) & SAADC_CH_CONFIG_MODE_Msk);
NRF_SAADC->CH[pin].PSELN = pin;
NRF_SAADC->CH[pin].PSELP = pin;
NRF_SAADC->CH[0].PSELN = pin;
NRF_SAADC->CH[0].PSELP = pin;
NRF_SAADC->RESULT.PTR = (uint32_t)&value;
NRF_SAADC->RESULT.MAXCNT = 1; // One sample
......
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