Master is now using the same FW_Update Methode as the Slaves

Application/ram_loader/CMakeLists.txt

@@ -0,0 +1,34 @@
+# Set the minimum required CMake version
+cmake_minimum_required(VERSION 3.12)
+
+# Set the project name
+project(ram_loader)
+
+# Add the source files for the library
+set(SOURCES
+    ram_loader.c
+)
+
+# Add the header files for the library
+set(HEADERS
+    ram_loader.h
+)
+
+# Create the library target
+add_library(ram_loader ${SOURCES} ${HEADERS})
+
+# Set the include directories for the library
+target_include_directories(ram_loader PUBLIC ./)
+
+# Set any additional compiler flags or options
+# target_compile_options(${PROJECT_NAME} PRIVATE ...)
+
+# Set any additional linker flags or options
+# target_link_options(${PROJECT_NAME} PRIVATE ...)
+
+# Specify any dependencies for the library
+# target_link_libraries(${PROJECT_NAME} <dependency1> <dependency2> ...)
+
+# Optionally, add an executable target for testing
+# add_executable(test_ram_loader test/test_ram_loader.cpp)
+# target_link_libraries(test_ram_loader ${PROJECT_NAME})

Application/ram_loader/ram_loader.c

@@ -0,0 +1,110 @@
+#include "fatfs.h"
+#include "string.h"
+
+#define RAM_LOADER_BUFFER_SIZE 15*1024
+#define RAM_LOADER_ADDRESS 0x38000000
+#define APP_START_ADDRESS RAM_LOADER_ADDRESS
+uint8_t * ram_loader_buffer = (uint8_t *) RAM_LOADER_ADDRESS;
+
+void _app_start(void)
+{
+    __disable_irq();
+    // Reset USB
+
+    //De-init all peripherals
+    //HAL_ADC_DeInit(&hadc1);
+
+    // Disable Systick
+    SysTick->CTRL = 0;
+    SysTick->LOAD = 0;
+    SysTick->VAL = 0;
+
+    // Reset clock to default
+    HAL_RCC_DeInit();
+
+    // Clear all interrupt bits
+    for (uint8_t i = 0; i < sizeof(NVIC->ICER) / sizeof(NVIC->ICER[0]); i++)
+    {
+        NVIC->ICER[i] = 0xFFFFFFFF;
+        NVIC->ICPR[i] = 0xFFFFFFFF;
+    }
+
+    __enable_irq();
+
+
+    // set the vector table offset register
+    SCB->VTOR = APP_START_ADDRESS;
+
+    // get the application stack pointer
+    __set_MSP(((uint32_t *)APP_START_ADDRESS)[0]);
+
+
+    // jump to the application
+    ((void (*)(void))((uint32_t *)APP_START_ADDRESS)[1])();
+
+    // the application should never return
+    // ULOG_ERROR("Failed to start application");
+    while (1) {}
+
+}
+
+static uint8_t buffer[512];
+
+void RamLoader_LoadApplication()
+{
+
+    // check if the file "load.bin" exists
+    FIL file;
+    FRESULT res = f_open(&file, "load.bin", FA_READ);
+    if (res != FR_OK) {
+        // ULOG_ERROR("Failed to open file load.bin");
+        return;
+    }
+
+    UINT size =  f_size(&file);
+    // ensure the file is not larger than the buffer
+    if (size > RAM_LOADER_BUFFER_SIZE ) {
+        // ULOG_ERROR("File load.bin is too large");
+        return;
+    }
+
+    // read the file into the buffer
+    UINT bytes_read;
+    uint32_t remaining_bytes = size;
+    uint8_t *destination_ptr = ram_loader_buffer;
+    uint8_t *buffer_ptr = buffer;
+    while (remaining_bytes > 0) {
+        UINT read_size = remaining_bytes > 512 ? 512 : remaining_bytes;
+        res = f_read(&file, buffer_ptr, read_size, &bytes_read);
+        if (res != FR_OK) {
+            // ULOG_ERROR("Failed to read file load.bin");
+            return;
+        }
+        if (bytes_read != read_size) {
+            // ULOG_ERROR("Failed to read file load.bin completely");
+            return;
+        }
+
+        memcpy(destination_ptr, buffer_ptr, read_size);
+        remaining_bytes -= read_size;
+        destination_ptr += read_size;
+    }
+
+    // close the file
+    f_close(&file);
+
+
+    // check that the file to flash exists ("firm.bin")
+    res = f_open(&file, "firm.bin", FA_READ);
+    if (res != FR_OK) {
+        // ULOG_ERROR("Failed to open file firm.bin");
+        return;
+    }
+    //close the file
+    f_close(&file);
+
+
+    _app_start();
+
+
+}

Application/ram_loader/ram_loader.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void RamLoader_LoadApplication();