From e1a45dbccd24396588b5966012f85ce8b19b74a5 Mon Sep 17 00:00:00 2001
From: prosper00 <57373245+prosper00@users.noreply.github.com>
Date: Tue, 23 May 2023 22:20:31 -0600
Subject: [PATCH] Update wiring.c
---
examples/GPIO/wiring.c | 23 +++--------------------
1 file changed, 3 insertions(+), 20 deletions(-)
diff --git a/examples/GPIO/wiring.c b/examples/GPIO/wiring.c
index b8a71d3..f852cd0 100644
--- a/examples/GPIO/wiring.c
+++ b/examples/GPIO/wiring.c
@@ -46,27 +46,10 @@ void portEnable(enum GPIOports port) {
void pinMode(enum GPIOpins pin, enum GPIOpinMode mode) {
GPIO_TypeDef * GPIOx;
- uint16_t PinOffset = 0;
+ uint16_t PinOffset;
- if (pin <= pin_A7) {
- GPIOx = GPIOA;
- PinOffset = pin << 2;
- }
- else if (pin <= pin_B7) { /* GPIOB doesn't actually exist (yet?)
- GPIOx = GPIOB;
- PinOffset = (pin-8) << 2; */
- }
- else if (pin <= pin_C7) {
- GPIOx = GPIOC;
- PinOffset = (pin - 16) << 2;
- }
- else if (pin <= pin_D7) {
- GPIOx = GPIOD;
- PinOffset = (pin - 24) << 2;
- }
- else {
- return;
- }
+ GPIOx = GPIOA+(pin>>3);
+ PinOffset = (pin & 0x7)<<2;
GPIOx->CFGLR &= ~(0b1111<<PinOffset); // zero the 4 configuration bits
--
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