@@ -20,24 +20,27 @@ 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;
#define WINDUP_GUARD_GAIN 100
uint16_t windup_guard = WINDUP_GUARD_GAIN;
uint16_t k_p = 1;
uint16_t k_i = 1;
uint16_t k_d = 1;
int16_t setpoint_brew = 0;
int16_t setpoint_steam = 0;
// State definition
enum state {
STATE_IDLE = 0,
STATE_SETP,
STATE_SETI,
STATE_SETD,
STATE_SETWINDUP,
STATE_SETBOOTTOBREW,
STATE_PREHEAT_BREW,
STATE_MAINTAIN_BREW,
@@ -48,24 +51,25 @@ enum state {
uint8_t state = STATE_IDLE;
static __IO uint32_t TimingDelay;
// Move to header file
void init_gpio();
void init_spi();
void process();
void machine();
void delay(__IO uint32_t nTime);
void restore_settings();
void save_settings();
void save_setpoints();
int main(void)
{
// Init clocks
SystemInit();
// Init GPIO
init_gpio();
// Init USB
//Set_USBClock();
@@ -298,56 +302,73 @@ uint8_t sw_right_last = 0;
uint16_t k_d = 1;*/
#define EEPROM_ADDR_WINDUP_GUARD 0x0808001C
#define EEPROM_ADDR_BOOTTOBREW 0x08080020
#define EEPROM_ADDR_K_P 0x8080024
#define EEPROM_ADDR_K_I 0x8080028
#define EEPROM_ADDR_K_D 0x808002C
#define EEPROM_ADDR_BREWTEMP 0x8080030
#define EEPROM_ADDR_STEAMTEMP 0x8080034
void save_settings()
DATA_EEPROM_Unlock();
// Try programming a word at an address divisible by 4
DATA_EEPROM_ProgramWord(EEPROM_ADDR_BOOTTOBREW, boottobrew);
DATA_EEPROM_ProgramWord(EEPROM_ADDR_WINDUP_GUARD, windup_guard);
DATA_EEPROM_ProgramWord(EEPROM_ADDR_K_P, k_p);
DATA_EEPROM_ProgramWord(EEPROM_ADDR_K_I, k_i);
DATA_EEPROM_ProgramWord(EEPROM_ADDR_K_D, k_d);
DATA_EEPROM_Lock();
}
void save_setpoints()
DATA_EEPROM_ProgramWord(EEPROM_ADDR_BREWTEMP, setpoint_brew);
DATA_EEPROM_ProgramWord(EEPROM_ADDR_STEAMTEMP, setpoint_steam);
// TODO: Save/restore temperature setpoint settings
void restore_settings()
while(FLASH_GetStatus()==FLASH_BUSY);
boottobrew = (*(__IO uint32_t*)EEPROM_ADDR_BOOTTOBREW);
windup_guard = (*(__IO uint32_t*)EEPROM_ADDR_WINDUP_GUARD);
k_p = (*(__IO uint32_t*)EEPROM_ADDR_K_P);
k_i = (*(__IO uint32_t*)EEPROM_ADDR_K_I);
k_d = (*(__IO uint32_t*)EEPROM_ADDR_K_D);
setpoint_brew = (*(__IO uint32_t*)EEPROM_ADDR_BREWTEMP);
setpoint_steam = (*(__IO uint32_t*)EEPROM_ADDR_STEAMTEMP);
void machine()
uint8_t last_state = state;
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);
@@ -582,119 +603,126 @@ void machine()
case STATE_PREHEAT_BREW:
// Write text to OLED
// [ therm : preheating brew ]
// [ 30 => 120 C ]
ssd1306_DrawString("Preheating...", 0, 40);
ssd1306_drawlogo();
draw_setpoint();
pid_enabled = 1;
setpoint = setpoint_brew;
// Button handler
if(SW_BTN_PRESSED) {
save_setpoints(); // TODO: Check for mod
state = STATE_IDLE;
else if(!GPIO_ReadInputDataBit(SW_UP)) {
setpoint++;
setpoint_brew++;
else if(!GPIO_ReadInputDataBit(SW_DOWN) && setpoint > 0) {
setpoint--;
else if(!GPIO_ReadInputDataBit(SW_DOWN) && setpoint_brew > 0) {
setpoint_brew--;
// Event Handler
if(temp >= setpoint) {
state = STATE_MAINTAIN_BREW;
} break;
case STATE_MAINTAIN_BREW:
// [ therm : ready to brew ]
ssd1306_DrawString("Ready to Brew!", 0, 40);
// N/A
case STATE_PREHEAT_STEAM:
// [ therm : preheating steam ]
setpoint = setpoint_steam;
setpoint_steam++;
else if(!GPIO_ReadInputDataBit(SW_DOWN) && setpoint_steam > 0) {
setpoint_steam--;
state = STATE_MAINTAIN_STEAM;
case STATE_MAINTAIN_STEAM:
// [ therm : ready to steam ]
ssd1306_DrawString("Ready to Steam!", 0, 40);
// Something is terribly wrong
default:
Status change: