From: Martin Mares <mj@ucw.cz>
Date: Fri, 14 Jul 2023 17:31:18 +0000 (+0200)
Subject: test-sinclair: Use internal pull-ups for optocoupler output
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=3e51c4c231136d971dd6a0458a027b13d70dc712;p=home-hw.git

test-sinclair: Use internal pull-ups for optocoupler output
---

diff --git a/test-sinclair/main.c b/test-sinclair/main.c
index 2c542fe..d0194cc 100644
--- a/test-sinclair/main.c
+++ b/test-sinclair/main.c
@@ -57,10 +57,11 @@ static void gpio_init(void)
 	gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
 	gpio_clear(GPIOC, GPIO13);
 
-	// PB13 = SCK2
-	// PB15 = MOSI2
-	gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO13);
-	gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO15);
+	// PB13 = SCK2 (pulled up)
+	// PB15 = MOSI2 (pulled up)
+	gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, GPIO13);
+	gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, GPIO15);
+	gpio_set(GPIOB, GPIO13 | GPIO15);
 
 	// PA8 = IR remote control
 	gpio_clear(GPIOA, GPIO8);