From b167912b1b3137c494a5033fe0dea6bb373624d2 Mon Sep 17 00:00:00 2001
From: px4dev <px4@purgatory.org>
Date: Mon, 31 Dec 2012 18:31:37 -0800
Subject: [PATCH] Enable the temperature sensor channel for F2/F4 devices.
---
apps/drivers/stm32/adc/adc.cpp | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/apps/drivers/stm32/adc/adc.cpp b/apps/drivers/stm32/adc/adc.cpp
index ed40b478a1..87dac1ef91 100644
--- a/apps/drivers/stm32/adc/adc.cpp
+++ b/apps/drivers/stm32/adc/adc.cpp
@@ -91,6 +91,10 @@
#define rJDR4 REG(STM32_ADC_JDR4_OFFSET)
#define rDR REG(STM32_ADC_DR_OFFSET)
+#ifdef STM32_ADC_CCR
+# define rCCR REG(STM32_ADC_CCR_OFFSET)
+#endif
+
class ADC : public device::CDev
{
public:
@@ -140,6 +144,9 @@ ADC::ADC(uint32_t channels) :
{
_debug_enabled = true;
+ /* always enable the temperature sensor */
+ channels |= 1 << 16;
+
/* allocate the sample array */
for (unsigned i = 0; i < 32; i++) {
if (channels & (1 << i)) {
@@ -188,10 +195,16 @@ ADC::init()
/* enable the temperature sensor / Vrefint channel if supported*/
rCR2 =
#ifdef ADC_CR2_TSVREFE
+ /* enable the temperature sensor in CR2 */
ADC_CR2_TSVREFE |
#endif
0;
+#ifdef ADC_CCR_TSVREFE
+ /* enable temperature sensor in CCR */
+ rCCR = ADC_CCR_TSVREFE;
+#endif
+
/* configure for a single-channel sequence */
rSQR1 = 0;
rSQR2 = 0;
--
GitLab