From 05faf884a41470970fd9638a1be6a0b76bfb71e2 Mon Sep 17 00:00:00 2001
From: Fabien Poussin <fabien.poussin@gmail.com>
Date: Tue, 8 Jan 2019 20:15:28 +0100
Subject: Updated opamp example

---
 testhal/STM32/STM32F3xx/OPAMP/main.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'testhal')

diff --git a/testhal/STM32/STM32F3xx/OPAMP/main.c b/testhal/STM32/STM32F3xx/OPAMP/main.c
index 0345f12..2bdb755 100644
--- a/testhal/STM32/STM32F3xx/OPAMP/main.c
+++ b/testhal/STM32/STM32F3xx/OPAMP/main.c
@@ -78,8 +78,15 @@ static const GPTConfig gpt6cfg1 = {
   .dier         = 0U
 };
 
+/*
+ * OpAmp configuration.
+ * We will double the input voltage
+ */
 static const OPAMPConfig opamp1_conf = {
-  0
+  STM32_OPAMP_NonInvertingInput_IO4 | // INP connectd to PA1
+  STM32_OPAMP_InvertingInput_PGA | // INM connected to PGA
+  STM32_OPAMP_PGAGain_2 | // Gain of 2x
+  STM32_OPAMP_PGAConnect_No // PGA connected to ground
 };
 
 /*
-- 
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