From 96fd915b76f8efbab84cd164f83b203a232c78df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A1nos=20Brodbeck?= <janos.brodbeck@posteo.de>
Date: Fri, 7 Aug 2020 19:17:24 +0200
Subject: [PATCH] boards/same54-xpro: add ADC periph_conf

---
 boards/same54-xpro/Kconfig               |  1 +
 boards/same54-xpro/Makefile.features     |  1 +
 boards/same54-xpro/include/periph_conf.h | 22 ++++++++++++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/boards/same54-xpro/Kconfig b/boards/same54-xpro/Kconfig
index 1bb42260da..e6342dfdc1 100644
--- a/boards/same54-xpro/Kconfig
+++ b/boards/same54-xpro/Kconfig
@@ -12,6 +12,7 @@ config BOARD_SAME54_XPRO
     default y
     select CPU_MODEL_SAME54P20A
     select HAS_PERIPH_DAC
+    select HAS_PERIPH_ADC
     select HAS_PERIPH_I2C
     select HAS_PERIPH_RTC
     select HAS_PERIPH_RTT
diff --git a/boards/same54-xpro/Makefile.features b/boards/same54-xpro/Makefile.features
index fbc66c1344..7bf9dac809 100644
--- a/boards/same54-xpro/Makefile.features
+++ b/boards/same54-xpro/Makefile.features
@@ -10,6 +10,7 @@ FEATURES_PROVIDED += periph_pwm
 FEATURES_PROVIDED += periph_spi
 FEATURES_PROVIDED += periph_timer
 FEATURES_PROVIDED += periph_uart
+FEATURES_PROVIDED += periph_adc
 FEATURES_PROVIDED += periph_usbdev
 
 # Put other features for this board (in alphabetical order)
diff --git a/boards/same54-xpro/include/periph_conf.h b/boards/same54-xpro/include/periph_conf.h
index 29ecf99d83..4d9c75d781 100644
--- a/boards/same54-xpro/include/periph_conf.h
+++ b/boards/same54-xpro/include/periph_conf.h
@@ -309,6 +309,28 @@ static const sam0_common_usb_config_t sam_usbdev_config[] = {
 };
 /** @} */
 
+/**
+ * @name ADC Configuration
+ * @{
+ */
+
+/* ADC Default values */
+#define ADC_PRESCALER                       ADC_CTRLA_PRESCALER_DIV128
+
+#define ADC_NEG_INPUT                       ADC_INPUTCTRL_MUXNEG(0x18u)
+#define ADC_REF_DEFAULT                     ADC_REFCTRL_REFSEL_INTVCC1
+#define ADC_DEV                             ADC0
+
+static const adc_conf_chan_t adc_channels[] = {
+    /* port, pin, muxpos */
+    {GPIO_PIN(PA, 3), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN1)},
+    {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN5)},
+    {GPIO_PIN(PA, 7), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN7)}
+};
+
+#define ADC_NUMOF                           ARRAY_SIZE(adc_channels)
+/** @} */
+
 /**
  * @name DAC configuration
  * @{