From 8cd0e6f140aedc99645f4d5494802680cc258e0a Mon Sep 17 00:00:00 2001
From: hugues <hlarrive@laas.fr>
Date: Sun, 6 Sep 2020 11:49:02 +0200
Subject: [PATCH] boards/nucleo-f334r8: add ADC feature

---
 boards/nucleo-f334r8/Kconfig               |  1 +
 boards/nucleo-f334r8/Makefile.features     |  1 +
 boards/nucleo-f334r8/include/periph_conf.h | 22 ++++++++++++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/boards/nucleo-f334r8/Kconfig b/boards/nucleo-f334r8/Kconfig
index a3170c0157..01988728b9 100644
--- a/boards/nucleo-f334r8/Kconfig
+++ b/boards/nucleo-f334r8/Kconfig
@@ -15,6 +15,7 @@ config BOARD_NUCLEO_F334R8
     select CPU_MODEL_STM32F334R8
 
     # Put defined MCU peripherals here (in alphabetical order)
+    select HAS_PERIPH_ADC
     select HAS_PERIPH_DMA
     select HAS_PERIPH_PWM
     select HAS_PERIPH_RTC
diff --git a/boards/nucleo-f334r8/Makefile.features b/boards/nucleo-f334r8/Makefile.features
index 1526867a49..9169db12b8 100644
--- a/boards/nucleo-f334r8/Makefile.features
+++ b/boards/nucleo-f334r8/Makefile.features
@@ -2,6 +2,7 @@ CPU = stm32
 CPU_MODEL = stm32f334r8
 
 # Put defined MCU peripherals here (in alphabetical order)
+FEATURES_PROVIDED += periph_adc
 FEATURES_PROVIDED += periph_dma
 FEATURES_PROVIDED += periph_pwm
 FEATURES_PROVIDED += periph_rtc
diff --git a/boards/nucleo-f334r8/include/periph_conf.h b/boards/nucleo-f334r8/include/periph_conf.h
index d5d5bc1914..c279fc6ce2 100644
--- a/boards/nucleo-f334r8/include/periph_conf.h
+++ b/boards/nucleo-f334r8/include/periph_conf.h
@@ -31,6 +31,28 @@
 extern "C" {
 #endif
 
+/**
+ * @name    ADC configuration
+ *
+ * Note that we do not configure all ADC channels,
+ * and not in the STM32F334 order.  Instead, we
+ * just define 6 ADC channels, for the Nucleo
+ * Arduino header pins A0-A5
+ *
+ * @{
+ */
+static const adc_conf_t adc_config[] = {
+    { .pin = GPIO_PIN(PORT_A, 0), .dev = 0, .chan =  1 }, /* ADC1_IN1,  fast */
+    { .pin = GPIO_PIN(PORT_A, 1), .dev = 0, .chan =  2 }, /* ADC1_IN2,  fast */
+    { .pin = GPIO_PIN(PORT_A, 4), .dev = 1, .chan =  1 }, /* ADC2_IN1,  fast */
+    { .pin = GPIO_PIN(PORT_B, 0), .dev = 0, .chan = 11 }, /* ADC1_IN11, slow */
+    { .pin = GPIO_PIN(PORT_C, 1), .dev = 1, .chan =  7 }, /* ADC12_IN7, slow */
+    { .pin = GPIO_PIN(PORT_C, 0), .dev = 1, .chan =  6 }, /* ADC12_IN6, slow */
+};
+
+#define ADC_NUMOF           ARRAY_SIZE(adc_config)
+/** @} */
+
 /**
  * @name    DMA streams configuration
  * @{