# STM32F0xx Makefile

# #####################################

#

# Part of the uCtools project

# uctools.github.com

#

#######################################

# user configuration:

#######################################

# SOURCES: list of sources in the user application

# TARGET: name of the user application

TARGET = main

# BUILD_DIR: directory to place output files in

BUILD_DIR = build

# LD_SCRIPT: location of the linker script

LD_SCRIPT = stm32f042c6_flash.ld

# USER_DEFS user defined macros

USER_DEFS = -D HSI48_VALUE=48000000 -D HSE_VALUE=16000000

# USER_INCLUDES: user defined includes

USER_INCLUDES =

# USB_INCLUDES: includes for the usb library

USB_INCLUDES = -Imiddlewares/ST/STM32_USB_Device_Library/Core/Inc

USB_INCLUDES += -Imiddlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc

# USER_CFLAGS: user C flags (enable warnings, enable debug info)

USER_CFLAGS = -Wall -g -ffunction-sections -fdata-sections -Os

# USER_LDFLAGS:  user LD flags

USER_LDFLAGS = -fno-exceptions -ffunction-sections -fdata-sections -Wl,--gc-sections

# TARGET_DEVICE: device to compile for

TARGET_DEVICE = STM32F042x6

#######################################

# end of user configuration

#######################################

#

#######################################

# binaries

#######################################

CC = arm-none-eabi-gcc

AR = arm-none-eabi-ar

RANLIB = arm-none-eabi-ranlib

SIZE = arm-none-eabi-size

OBJCOPY = arm-none-eabi-objcopy

MKDIR = mkdir -p

#######################################

# core and CPU type for Cortex M0

# ARM core type (CORE_M0, CORE_M3)

CORE = CORE_M0

# ARM CPU type (cortex-m0, cortex-m3)

CPU = cortex-m0

# where to build STM32Cube

CUBELIB_BUILD_DIR = $(BUILD_DIR)/STM32Cube

# various paths within the STmicro library

CMSIS_PATH = drivers/CMSIS

CMSIS_DEVICE_PATH = $(CMSIS_PATH)/Device/ST/STM32F0xx

DRIVER_PATH = drivers/STM32F0xx_HAL_Driver

# includes for gcc

INCLUDES = -I$(CMSIS_PATH)/Include

INCLUDES += -I$(CMSIS_DEVICE_PATH)/Include

INCLUDES += -I$(DRIVER_PATH)/Inc

INCLUDES += -I$(CURDIR)

INCLUDES += -I$(CURDIR)/usb

INCLUDES += $(USB_INCLUDES)

INCLUDES += $(USER_INCLUDES)

# macros for gcc

DEFS = -D$(CORE) $(USER_DEFS) -D$(TARGET_DEVICE)

# compile gcc flags

CFLAGS = $(DEFS) $(INCLUDES)

CFLAGS += -mcpu=$(CPU) -mthumb

CFLAGS += $(USER_CFLAGS)

# default action: build the user application

all: $(BUILD_DIR)/$(TARGET).hex

#######################################

# build the st micro peripherial library

# (drivers and CMSIS)

#######################################

CUBELIB = $(CUBELIB_BUILD_DIR)/libstm32cube.a

# List of stm32 driver objects

CUBELIB_DRIVER_OBJS = $(addprefix $(CUBELIB_BUILD_DIR)/, $(patsubst %.c, %.o, $(notdir $(wildcard $(DRIVER_PATH)/Src/*.c))))

# shortcut for building core library (make cubelib)

cubelib: $(CUBELIB)

$(CUBELIB): $(CUBELIB_DRIVER_OBJS)

	$(AR) rv $@ $(CUBELIB_DRIVER_OBJS)

	$(RANLIB) $@

$(CUBELIB_BUILD_DIR)/%.o: $(DRIVER_PATH)/Src/%.c | $(CUBELIB_BUILD_DIR)

	$(CC) -c $(CFLAGS) -o $@ $^

#include "stm32f0xx_hal.h"

#include "config.h"

#include "states.h"

#include "ssd1306.h"

#include "gpio.h"

#include "spi.h"

#include "stringhelpers.h"

#include "display.h"

#include "usb_device.h"

#include "usbd_cdc_if.h"

// Prototypes

// Move to header file

void process();

void restore_settings();

void save_settings();

void save_setpoints();

void SystemClock_Config(void);

therm_settings_t set;

therm_status_t status;

// Globalish setting vars

SPI_HandleTypeDef hspi1;

static __IO uint32_t TimingDelay;

void deinit(void)

{

    HAL_DeInit();

}

volatile int i=0;

int main(void)

{

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

    HAL_Init();

    /* Configure the system clock */

    SystemClock_Config();

    /* Unset bootloader option bytes (if set) */

    void bootloader_unset(void);

    /* Initialize all configured peripherals */

    init_gpio();

    MX_USB_DEVICE_Init();

    // USB startup delay

    HAL_Delay(1000);

    HAL_GPIO_WritePin(LED_POWER, 1);

    // TODO: Awesome pwm of power LED 

    // Configure 1ms SysTick (change if more temporal resolution needed) 

    //RCC_ClocksTypeDef RCC_Clocks;

    //RCC_GetClocksFreq(&RCC_Clocks);

    //SysTick_Config(RCC_Clocks.HCLK_Frequency / 1000);

    // Init SPI busses

    init_spi();

    // Init OLED over SPI

    ssd1306_Init();

    ssd1306_clearscreen();

    // Default settings 

    set.boottobrew = 0;

    set.temp_units = TEMP_UNITS_CELSIUS;

    set.windup_guard = 1;

    set.k_p = 1;

    set.k_i = 1;

    set.k_d = 1;

    set.ignore_tc_error = 0;

    set.setpoint_brew = 0;

    set.setpoint_steam = 0;

    // Default status

    status.temp = 0;

    status.temp_frac = 0;

    status.state_resume = 0;

    status.state = STATE_IDLE;

    status.setpoint = 0;

    status.pid_enabled = 0;

    // Load settings (if any) from EEPROM

    restore_settings();

    // Go to brew instead of idle if configured thusly

    if(set.boottobrew)

      status.state = STATE_PREHEAT_BREW; 

    // Startup screen 

    ssd1306_DrawString("therm v0.2", 1, 40);

    ssd1306_DrawString("protofusion.org/therm", 3, 0);

    HAL_Delay(1500);