From 7faa92825f7faa205fe4cccf859a4ca4e4315170 Mon Sep 17 00:00:00 2001
From: jake <jakegoodwin@tutanota.com>
Date: Thu, 6 Mar 2025 17:50:09 -0800
Subject: [PATCH] Added blink source and compiler options

---
 src/CMakeLists.txt | 58 +++++++++++++++++++++++++++++++++++++++++++++-
 src/main.c         | 38 ++++++++++++++++++++++++++----
 2 files changed, 91 insertions(+), 5 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f9696af..43fffc6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,3 +1,59 @@
-add_executable(main
+# Compiler flags
+add_compile_options(
+    -g
+    -Os
+    -flto
+    -ffunction-sections
+    -fdata-sections
+    -fmessage-length=0
+    -msmall-data-limit=8
+    -march=rv32ec
+    -mabi=ilp32e
+    -DCH32V003=1
+    -static-libgcc
+    -nostdlib
+    -Wall
+)
+
+add_executable(${PROJECT_NAME}
     main.c    
 )
+
+target_include_directories(${PROJECT_NAME} PUBLIC
+    ${CMAKE_SOURCE_DIR}/extralibs
+    ${CMAKE_SOURCE_DIR}/ch32fun
+)
+
+target_link_libraries(${PROJECT_NAME}
+    ch32fun
+    #libgcc
+    #${CMAKE_SOURCE_DIR}/libgcc.a
+)
+
+target_link_options(${PROJECT_NAME} PRIVATE -static-libgcc)
+
+
+set_target_properties(${PROJECT_NAME} PROPERTIES SUFFIX ".elf")
+
+# The other "targets" are size, upload, debug, production, etc
+
+#if(NOT TARGET size)
+
+#if(NOT TARGET debug)
+
+#if(NOT TARGET production)
+
+#if(NOT TARGET upload)
+
+#endif()
+
+
+
+#add_library(libgcc STATIC IMPORTED)
+#set_target_properties(libgcc PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/libgcc.a)
+
+
+
+add_subdirectory(ch32fun)
+#add_subdirectory(extralibs)
+add_subdirectory(attic)
diff --git a/src/main.c b/src/main.c
index f98dddf..fbac698 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,7 +1,37 @@
-#include "stdio.h"
+#include "ch32fun.h"
+//#include <stdio.h>
 
-int main(int argc, char **argv)
+int main(void)
 {
-    printf("Hello!\n");
-    return 0;
+    SystemInit();
+
+    // Enable GPIOs
+    RCC->APB2PCENR |= RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOC;
+
+    // GPIO D0 Push-Pull
+    GPIOD->CFGLR &= ~(0xf << (4 * 0));
+    GPIOD->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 0);
+
+    // GPIO D4 Push-Pull
+    GPIOD->CFGLR &= ~(0xf << (4 * 4));
+    GPIOD->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 4);
+
+    // GPIO D6 Push-Pull
+    GPIOD->CFGLR &= ~(0xf << (4 * 6));
+    GPIOD->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 6);
+
+    // GPIO C0 Push-Pull
+    GPIOC->CFGLR &= ~(0xf << (4 * 0));
+    GPIOC->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 0);
+
+    while (1)
+    {
+        GPIOD->BSHR = (1 << 0) | (1 << 4) | (1 << 6); // Turn on GPIOs
+        GPIOC->BSHR = (1 << 0);
+        Delay_Ms(250);
+
+        GPIOD->BSHR = (1 << 16) | (1 << (16 + 4)) | (1 << (16 + 6)); // Turn off GPIOs
+        GPIOC->BSHR = (1 << 16);
+        Delay_Ms(250);
+    }
 }