From baee1b2e94ba9570abe902b82aa8cd6a70a565cf Mon Sep 17 00:00:00 2001
From: Eggert Jung <eggert.s.jung@wischhof13.de>
Date: Sun, 14 Sep 2025 20:23:51 +0200
Subject: [PATCH] add missing files

---
 Inc/address_selector.h |  6 ++++++
 Src/address_selector.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)
 create mode 100644 Inc/address_selector.h
 create mode 100644 Src/address_selector.c

diff --git a/Inc/address_selector.h b/Inc/address_selector.h
new file mode 100644
index 0000000..3813df2
--- /dev/null
+++ b/Inc/address_selector.h
@@ -0,0 +1,6 @@
+#include <stdint.h>
+
+void adress_selector_init_gpio();
+uint8_t read_address();
+
+extern uint8_t dmx_address;
diff --git a/Src/address_selector.c b/Src/address_selector.c
new file mode 100644
index 0000000..e48ba8a
--- /dev/null
+++ b/Src/address_selector.c
@@ -0,0 +1,53 @@
+#include "stm32g0b1xx.h"
+#include <stdio.h>
+
+uint8_t dmx_address;
+
+void adress_selector_init_gpio(){
+    RCC->IOPENR |= RCC_IOPENR_GPIOEEN;
+    RCC->IOPENR |= RCC_IOPENR_GPIOBEN;
+
+    GPIOE->MODER &= ~(0x3 << (9 * 2));
+    GPIOE->MODER &= ~(0x3 << (10 * 2));
+    GPIOE->MODER &= ~(0x3 << (11 * 2));
+    GPIOE->MODER &= ~(0x3 << (12 * 2));
+    GPIOE->MODER &= ~(0x3 << (13 * 2));
+    GPIOE->MODER &= ~(0x3 << (14 * 2));
+    GPIOE->MODER &= ~(0x3 << (15 * 2));
+    GPIOB->MODER &= ~(0x3 << (10 * 2)); // B10
+
+    GPIOE->PUPDR &= ~(0x3 << (9 * 2));
+    GPIOE->PUPDR |=  (0x1 << (9 * 2));
+
+    GPIOE->PUPDR &= ~(0x3 << (10 * 2));
+    GPIOE->PUPDR |=  (0x1 << (10 * 2));
+
+    GPIOE->PUPDR &= ~(0x3 << (11 * 2));
+    GPIOE->PUPDR |=  (0x1 << (11 * 2));
+
+    GPIOE->PUPDR &= ~(0x3 << (12 * 2));
+    GPIOE->PUPDR |=  (0x1 << (12 * 2));
+
+    GPIOE->PUPDR |=  (0x1 << (13 * 2));
+    GPIOE->PUPDR &= ~(0x3 << (13 * 2));
+
+    GPIOE->PUPDR |=  (0x1 << (14 * 2));
+    GPIOE->PUPDR &= ~(0x3 << (14 * 2));
+
+    GPIOE->PUPDR |=  (0x1 << (15 * 2));
+    GPIOE->PUPDR &= ~(0x3 << (15 * 2));
+
+    GPIOB->PUPDR &= ~(0x3 << (10 * 2)); // B10
+    GPIOB->PUPDR |=  (0x1 << (10 * 2));
+}
+
+uint8_t read_address(){
+#ifndef DMX_ADDRESS
+    uint16_t address = ((GPIOE->IDR >> 9)&0x7F) | (GPIOB->IDR & (1<<10))>>3;
+    printf("read address: %d = 0x%x\n", address);
+#else
+    uint16_t address = DMX_ADDRESS;
+    printf("static address: %d\n", address);
+#endif
+    return address;
+}