Changeset - 7e8e32dead20
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Ethan Zonca - 11 years ago 2014-11-14 23:12:59
ez@ethanzonca.com
Setpoint setting code compiles
1 file changed with 43 insertions and 51 deletions:
main.c
43
51
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main.c
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#include "main.h"
 
#include "stm32l100c_discovery.h"
 
#include "ssd1306.h"
 
#include "config.h"
 
#include "eeprom_min.h"
 
#include "gpio.h"
 
#include "spi.h"
 
 
// USB includes
 
#include "hw_config.h"
 
#include "usb_lib.h"
 
#include "usb_desc.h"
 
#include "usb_pwr.h"
 
#include "stringhelpers.h"
 
 
// TODO: Grab buttonpresses with interrupts
 
 
// USB Supporting Vars
 
extern __IO uint8_t Receive_Buffer[64];
 
extern __IO  uint32_t Receive_length ;
 
extern __IO  uint32_t length ;
 
uint8_t Send_Buffer[64];
 
uint32_t packet_sent=1;
 
uint32_t packet_receive=1;
 
 
// Globalish setting vars
 
uint8_t boottobrew = 0;
 
uint16_t windup_guard = 1;
 
uint16_t k_p = 1;
 
uint16_t k_i = 1;
 
uint16_t k_d = 1;
 
 
// ISR ticks var
 
volatile uint32_t ticks = 0;
 
 
int16_t setpoint_brew = 0;
 
int16_t setpoint_steam = 0;
 
 
// State definition
 
enum state {
 
    STATE_IDLE = 0,
 
 
    STATE_SETP,
 
    STATE_SETI,
 
    STATE_SETD,
 
    STATE_SETSTEPS,
 
    STATE_SETWINDUP,
 
    STATE_SETBOOTTOBREW,
 
 
    STATE_PREHEAT_BREW,
 
    STATE_MAINTAIN_BREW,
 
    STATE_PREHEAT_STEAM,
 
    STATE_MAINTAIN_STEAM,
 
};
 
 
uint8_t state = STATE_IDLE;
 
 
static __IO uint32_t TimingDelay;
 
 
// Move to header file
 
void process();
 
void machine();
 
 
void restore_settings();
 
void save_settings();
 
void save_setpoints();
 
 
int main(void)
 
{
 
    // Init clocks
 
    SystemInit();
 
 
    // Init GPIO
 
    init_gpio();
 
 
    // Turn on power LED
 
    GPIO_SetBits(LED_POWER);
 
 
    // TODO: Awesome pwm of power LED (TIM4_CH4 or TIM11_CH1)
 
 
    // 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();
 
 
    // Check for problems on startup
 
    if(clock_fail) {
 
@@ -317,148 +318,100 @@ void save_settings()
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_I, k_i);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_D, k_d);
 
    Minimal_EEPROM_Lock();
 
}
 
 
void save_setpoints()
 
{
 
 
    Minimal_EEPROM_Unlock();
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_BREWTEMP, setpoint_brew);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_STEAMTEMP, setpoint_steam);
 
    Minimal_EEPROM_Lock();
 
}
 
 
 
// TODO: Make a struct that has all settings in it. Pass by ref to this func in a library.
 
void restore_settings()
 
{
 
    Minimal_EEPROM_Unlock();
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    boottobrew = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_BOOTTOBREW));
 
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    windup_guard = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_WINDUP_GUARD));
 
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    k_p = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_K_P));
 
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    k_i = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_K_I));
 
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    k_d = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_K_D));
 
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    setpoint_brew = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_BREWTEMP));
 
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    setpoint_steam = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_STEAMTEMP));
 
 
    Minimal_EEPROM_Lock();
 
}
 
 
int16_t last_temp = 21245;
 
 
 
///////////////////////////////////////////////////////////////////////////////////////
 
/// freaking multiple setpoint support ///
 
uint8_t step_duration[10];
 
int16_t step_setpoint[10];
 
uint8_t step_duration[10] = {0,0,0,0,0,0,0,0,0,0};
 
int16_t step_setpoint[10] = {0,0,0,0,0,0,0,0,0,0};
 
uint8_t final_setpoint = 0;
 
 
void stepper_init()
 
{
 
    int i;
 
    for(i=0; i<10; i++)
 
    {
 
        step_duration[i] = 0;
 
        step_setpoint[i] = 0;
 
    }
 
}
 
 
void state_setstepper()
 
{
 
    // Write text to OLED
 
    // [ step #1:: Duration: ### ]
 
    // [           Setpoint: ### ]
 
    char tempstr[6];
 
 
    itoa(stepnum, tempstr);
 
    ssd1306_DrawString("Step #", 0, 0);
 
    ssd1306_DrawString(tempstr, 0, 40);
 
 
    ssd1306_DrawString("Duration: ", 0, 5);
 
    itoa(step_duration[final_setpoint], tempstr);
 
    ssd1306_DrawString(tempstr, 0, 70);
 
 
    ssd1306_DrawString("Setpoint: ", 0, 0);
 
    itoa(step_setpoint[final_setpoint], tempstr);
 
    itoa(stepnum, tempstr);
 
 
    ssd1306_DrawString("Press to accept", 3, 40);
 
 
    // Button handler - TODO: increment max_step if pressed
 
    // return and go to next state otherwise
 
    if(SW_BTN_PRESSED) {
 
        state = STATE_SETSTEPPER;
 
        final_setpoint++
 
    }
 
    else if(SW_LEFT_PRESSED) {
 
        state++; // go to next state or something
 
    }
 
    else {
 
        user_input(&k_p);
 
    }
 
 
    // Event Handler
 
    // N/A
 
}
 
 
// Multiple screens to set setpoint and duration on each screen
 
// press center to go to the next one, and press left or right or something to confirm
 
 
// When executing, complete on time AND(?) temperature. Maybe allow switching to OR via settings
 
 
////////////////////////////////////////////////////////////////////////////////////////////////
 
 
void machine()
 
{
 
    uint8_t last_state = state;
 
 
    uint8_t temp_changed = temp != last_temp;
 
    last_temp = temp;
 
 
    uint8_t sw_btn = !GPIO_ReadInputDataBit(SW_BTN);
 
    uint8_t sw_up = !GPIO_ReadInputDataBit(SW_UP);
 
    uint8_t sw_down = !GPIO_ReadInputDataBit(SW_DOWN);
 
    uint8_t sw_left = !GPIO_ReadInputDataBit(SW_LEFT);
 
    uint8_t sw_right = !GPIO_ReadInputDataBit(SW_RIGHT);
 
 
    switch(state)
 
    {
 
        // Idle state
 
        case STATE_IDLE:
 
        {
 
            // Write text to OLED
 
            // [ therm :: idle ]
 
            ssd1306_DrawString("therm :: idle ", 0, 40);
 
            pid_enabled = 0;
 
 
            if(temp_changed) {
 
                char tempstr[6];
 
                itoa_fp(temp, temp_frac, tempstr);
 
                ssd1306_DrawString("Temp: ", 3, 40);
 
                ssd1306_DrawString("    ", 3, 72);
 
                ssd1306_DrawString(tempstr, 3, 72);
 
            }
 
 
            ssd1306_drawlogo();
 
 
            switch(goto_mode) {
 
                case 2:
 
                {
 
                    ssd1306_DrawString("-> brew     ", 1, 40);
 
                } break;
 
 
                case 1:
 
                {
 
@@ -531,107 +484,146 @@ void machine()
 
 
        case STATE_SETI:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set i ]
 
            // [ i = 12         ]
 
            ssd1306_DrawString("Integral", 0, 40);
 
            ssd1306_drawlogo();
 
 
            char tempstr[6];
 
            itoa(k_i, tempstr);
 
            ssd1306_DrawString("I=", 1, 45);
 
            ssd1306_DrawString("    ", 1, 57);
 
            ssd1306_DrawString(tempstr, 1, 57);
 
 
            ssd1306_DrawString("Press to accept", 3, 40);
 
 
            // Button handler
 
            if(SW_BTN_PRESSED) {
 
                state = STATE_SETD;
 
            }
 
            else {
 
                user_input(&k_i);
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETD:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set d ]
 
            // [ d = 12         ]
 
            ssd1306_DrawString("Derivative", 0, 40);
 
            ssd1306_drawlogo();
 
 
            char tempstr[6];
 
            itoa(k_d, tempstr);
 
            ssd1306_DrawString("D=", 1, 45);
 
            ssd1306_DrawString("    ", 1, 57);
 
            ssd1306_DrawString(tempstr, 1, 57);
 
 
            ssd1306_DrawString("Press to accept", 3, 40);
 
 
            // Button handler
 
            if(SW_BTN_PRESSED) {
 
                state = STATE_SETWINDUP;
 
                state = STATE_SETSTEPS;
 
            }
 
            else {
 
                user_input(&k_d);
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETSTEPS:
 
        {
 
            // Write text to OLED
 
            // [ step #1:: Duration: ### ]
 
            // [           Setpoint: ### ]
 
            char tempstr[6];
 
 
            itoa(final_setpoint, tempstr);
 
            ssd1306_DrawString("Step #", 0, 0);
 
            ssd1306_DrawString(tempstr, 0, 40);
 
 
            ssd1306_DrawString("Duration: ", 0, 5);
 
            itoa(step_duration[final_setpoint], tempstr);
 
            ssd1306_DrawString(tempstr, 0, 70);
 
 
            ssd1306_DrawString("Setpoint: ", 0, 0);
 
            itoa(step_setpoint[final_setpoint], tempstr);
 
            ssd1306_DrawString(tempstr, 0, 70);
 
 
            ssd1306_DrawString("Press to accept", 3, 40);
 
 
            // Button handler - TODO: increment max_step if pressed
 
            // return and go to next state otherwise
 
            if(SW_BTN_PRESSED) {
 
                state = STATE_SETSTEPS;
 
                final_setpoint++;
 
            }
 
        //    else if(SW_LEFT_PRESSED) {
 
        //        state++; // go to next state or something
 
        //    }
 
            else {
 
                user_input(&k_p);
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETWINDUP:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set windup ]
 
            // [ g = 12         ]
 
            ssd1306_DrawString("Windup Guard", 0, 40);
 
            ssd1306_drawlogo();
 
 
            char tempstr[6];
 
            itoa(windup_guard, tempstr);
 
            ssd1306_DrawString("G=", 1, 45);
 
            ssd1306_DrawString("    ", 1, 57);
 
            ssd1306_DrawString(tempstr, 1, 57);
 
 
            ssd1306_DrawString("Press to accept", 3, 40);
 
 
            // Button handler
 
            if(SW_BTN_PRESSED) {
 
                state = STATE_SETBOOTTOBREW;
 
            }
 
            else {
 
                user_input(&windup_guard);
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETBOOTTOBREW:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set windup ]
 
            // [ g = 12         ]
 
            ssd1306_DrawString("Boot to Brew", 0, 40);
 
            ssd1306_drawlogo();
 
 
            ssd1306_DrawString("btb=", 1, 45);
 
 
            if(boottobrew)
 
                ssd1306_DrawString("Enabled ", 1, 70);
 
            else
 
                ssd1306_DrawString("Disabled", 1, 70);
 
 
            ssd1306_DrawString("Press to accept", 3, 40);
 
 
            // Button handler
 
            if(SW_BTN_PRESSED) {
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