From b75ff2e2aecf5f9433573e8de3de06eabb9b02f5 Mon Sep 17 00:00:00 2001
From: Andy Piper <github@andypiper.com>
Date: Fri, 14 Apr 2023 20:48:05 +0100
Subject: [PATCH] AP_HAL_ChibiOS: allow only ADC2 to be used

---
 libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h b/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h
index c447a9301b..b80a848e5e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h
+++ b/libraries/AP_HAL_ChibiOS/hwdef/common/stm32h7_mcuconf.h
@@ -587,8 +587,11 @@
 #define STM32_ADC_ADC3_CLOCK_MODE           ADC_CCR_CKMODE_ADCCK
 
 // we call it ADC1 in hwdef.dat, but driver uses ADC12 for DMA stream
+#ifdef STM32_ADC_ADC1_DMA_STREAM
 #define STM32_ADC_ADC12_DMA_STREAM STM32_ADC_ADC1_DMA_STREAM
-
+#elif defined(STM32_ADC_ADC2_DMA_STREAM)
+#define STM32_ADC_ADC12_DMA_STREAM STM32_ADC_ADC2_DMA_STREAM
+#endif
 
 /*
  * CAN driver system settings.