From 72b36371b276d77da9d9654ff6338acc2c25015e Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Wed, 11 Jan 2017 10:38:11 +0000
Subject: ADCv1 enhancement.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10031 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.c | 92 ++++++++++++++++++++++++++++++
 os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.h |  8 +++
 2 files changed, 100 insertions(+)

(limited to 'os/hal')

diff --git a/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.c b/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.c
index 55d0d2d44..2f67aa80a 100644
--- a/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.c
+++ b/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.c
@@ -335,6 +335,98 @@ void adc_lld_serve_interrupt(ADCDriver *adcp) {
   }
 }
 
+/**
+ * @brief   Enables the VREFEN bit.
+ * @details The VREFEN bit is required in order to sample the VREF channel.
+ * @note    This is an STM32-only functionality.
+ * @note    This function is meant to be called after @p adcStart().
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adcSTM32EnableVREF(void) {
+
+  ADC->CCR |= ADC_CCR_VREFEN;
+}
+
+/**
+ * @brief   Disables the VREFEN bit.
+ * @details The VREFEN bit is required in order to sample the VREF channel.
+ * @note    This is an STM32-only functionality.
+ * @note    This function is meant to be called after @p adcStart().
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adcSTM32DisableVREF(void) {
+
+  ADC->CCR &= ~ADC_CCR_VREFEN;
+}
+
+/**
+ * @brief   Enables the TSEN bit.
+ * @details The TSEN bit is required in order to sample the internal
+ *          temperature sensor and internal reference voltage.
+ * @note    This is an STM32-only functionality.
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adcSTM32EnableTS(void) {
+
+  ADC->CCR |= ADC_CCR_TSEN;
+}
+
+/**
+ * @brief   Disables the TSEN bit.
+ * @details The TSEN bit is required in order to sample the internal
+ *          temperature sensor and internal reference voltage.
+ * @note    This is an STM32-only functionality.
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adcSTM32DisableTS(void) {
+
+  ADC->CCR &= ~ADC_CCR_TSEN;
+}
+
+#ifdef STM32F0XX
+/**
+ * @brief   Enables the VBATEN bit.
+ * @details The VBATEN bit is required in order to sample the VBAT channel.
+ * @note    This is an STM32-only functionality.
+ * @note    This function is meant to be called after @p adcStart().
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adcSTM32EnableVBAT(void) {
+
+  ADC->CCR |= ADC_CCR_VBATEN;
+}
+
+/**
+ * @brief   Disables the VBATEN bit.
+ * @details The VBATEN bit is required in order to sample the VBAT channel.
+ * @note    This is an STM32-only functionality.
+ * @note    This function is meant to be called after @p adcStart().
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adcSTM32DisableVBAT(void) {
+
+  ADC->CCR &= ~ADC_CCR_VBATEN;
+}
+#endif /* STM32F0XX */
+
 #endif /* HAL_USE_ADC */
 
 /** @} */
diff --git a/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.h b/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.h
index 6cb2e0a9a..93bba6cb9 100644
--- a/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.h
+++ b/os/hal/ports/STM32/LLD/ADCv1/hal_adc_lld.h
@@ -430,6 +430,14 @@ extern "C" {
   void adc_lld_start_conversion(ADCDriver *adcp);
   void adc_lld_stop_conversion(ADCDriver *adcp);
   void adc_lld_serve_interrupt(ADCDriver *adcp);
+  void adcSTM32EnableVREF(void);
+  void adcSTM32DisableVREF(void);
+  void adcSTM32EnableTS(void);
+  void adcSTM32DisableTS(void);
+#ifdef STM32F0XX
+  void adcSTM32EnableVBAT(void);
+  void adcSTM32DisableVBAT(void);
+#endif /* STM32F0XX */
 #ifdef __cplusplus
 }
 #endif
-- 
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