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Location: therm/display.c
d4552b17855a
16.1 KiB
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Resolved all compiler warnings
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// Private function prototypes
static void draw_setpoint(therm_status_t* status);
// Button transition variables
static uint8_t sw_btn_last = 0;
static uint8_t sw_up_last = 0;
static uint8_t sw_down_last = 0;
static uint8_t sw_left_last = 0;
static uint8_t sw_right_last = 0;
// Buttonpress macros
#define SW_BTN_PRESSED (sw_btn_last == 0 && sw_btn == 1) // rising edge on buttonpress
#define SW_UP_PRESSED (sw_up_last == 0 && sw_up == 1)
#define SW_DOWN_PRESSED (sw_down_last == 0 && sw_down == 1)
#define SW_LEFT_PRESSED (sw_left_last == 0 && sw_left == 1)
#define SW_RIGHT_PRESSED (sw_right_last == 0 && sw_right == 1)
// States
static uint8_t trigger_drawsetpoint = 1;
static int16_t last_temp = 21245;
static uint8_t goto_mode = MODE_HEAT;
static uint8_t reset_mode = RESET_REBOOT;
// Display state machine
void display_process(therm_settings_t* set, therm_status_t* status)
{
uint8_t last_state = status->state;
uint8_t temp_changed = status->temp != last_temp;
last_temp = status->temp;
uint8_t sw_btn = !HAL_GPIO_ReadPin(SW_BTN);
uint8_t sw_up = !HAL_GPIO_ReadPin(SW_UP);
uint8_t sw_down = !HAL_GPIO_ReadPin(SW_DOWN);
uint8_t sw_left = !HAL_GPIO_ReadPin(SW_LEFT);
uint8_t sw_right = !HAL_GPIO_ReadPin(SW_RIGHT);
switch(status->state)
{
// Idle state
case STATE_IDLE:
{
// Write text to OLED
// [ therm :: idle ]
ssd1306_drawstring("therm :: idle ", 0, 40);
status->pid_enabled = 0;
if(temp_changed) {
char tempstr[6];
itoa_fp(status->temp, status->temp_frac, tempstr);
ssd1306_drawstring("Temp: ", 3, 40);
ssd1306_drawstring(" ", 3, 72);
ssd1306_drawstring(tempstr, 3, 72);
}
ssd1306_drawlogo();
switch(goto_mode) {
case MODE_HEAT:
{
ssd1306_drawstring("-> heat ", 1, 40);
} break;
case MODE_SETUP:
{
ssd1306_drawstring("-> setup ", 1, 40);
} break;
case MODE_RESET:
{
ssd1306_drawstring("-> reset ", 1, 40);
} break;
#ifdef BOOTLOADER_SHORTCUT
case MODE_BOOTLOADER:
{
ssd1306_drawstring("-> dfu ", 1, 40);
}
#endif
}
// Button handler
if(SW_BTN_PRESSED) {
switch(goto_mode) {
case MODE_HEAT:
status->state = STATE_PREHEAT;
break;
case MODE_SETUP:
status->state = STATE_SETP;
break;
case MODE_RESET:
status->state = STATE_RESET;
reset_mode = RESET_REBOOT;
break;
#ifdef BOOTLOADER_SHORTCUT
case MODE_BOOTLOADER:
ssd1306_clearscreen();
ssd1306_drawstring("Bootloader Entered", 0, 0);
ssd1306_drawstring("Device won't boot", 2, 0);
ssd1306_drawstring("until reflashed!", 3, 0);
bootloader_enter(); // Resets into bootloader
status->state = STATE_RESET; // Just in case
break;
#endif
default:
status->state = STATE_PREHEAT;
}
}
else if(SW_DOWN_PRESSED && goto_mode < (MODE_SIZE - 1)) {
goto_mode++;
}
else if(SW_UP_PRESSED && goto_mode > 0) {
goto_mode--;
}
// Event Handler
// N/A
} break;
case STATE_SETP:
{
// Write text to OLED
// [ therm :: set p ]
// [ p = 12 ]
ssd1306_drawstring("Proportional", 0, 40);
ssd1306_drawlogo();
char tempstr[6];
itoa(set->val.k_p, tempstr, 10);
ssd1306_drawstring("P=", 1, 45);
ssd1306_drawstring(" ", 1, 57);
ssd1306_drawstring(tempstr, 1, 57);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETI;
}
else {
user_input((uint16_t*)&set->val.k_p);
}
// Event Handler
// N/A
} break;
case STATE_SETI:
{
// Write text to OLED
// [ therm :: set i ]
// [ i = 12 ]
ssd1306_drawstring("Integral", 0, 40);
ssd1306_drawlogo();
char tempstr[6];
itoa(set->val.k_i, tempstr, 10);
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) {
status->state = STATE_SETD;
}
else {
user_input((uint16_t*)&set->val.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(set->val.k_d, tempstr, 10);
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) {
status->state = STATE_SETWINDUP;
}
else {
user_input((uint16_t*)&set->val.k_d);
}
// 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(set->val.windup_guard, tempstr, 10);
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) {
status->state = STATE_SETBOOTTOBREW;
}
else {
user_input((uint16_t*)&set->val.windup_guard);
}
// Event Handler
// N/A
} break;
case STATE_SETBOOTTOBREW:
{
// Write text to OLED
// [ therm :: set windup ]
// [ g = 12 ]
ssd1306_drawstring("Start on Boot", 0, 40);
ssd1306_drawlogo();
ssd1306_drawstring("sob=", 1, 45);
if(set->val.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) {
status->state = STATE_SETUNITS;
}
else if(!HAL_GPIO_ReadPin(SW_UP)) {
set->val.boottobrew = 1;
}
else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
set->val.boottobrew = 0;
}
// Event Handler
// N/A
} break;
case STATE_SETUNITS:
{
// Write text to OLED
// [ therm :: set windup ]
// [ g = 12 ]
ssd1306_drawstring("Units: ", 0, 40);
ssd1306_drawlogo();
if(set->val.temp_units == TEMP_UNITS_FAHRENHEIT)
ssd1306_drawstring("Fahrenheit", 1, 60);
else
ssd1306_drawstring("Celsius ", 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETTEMPOFFSET;
}
else if(!HAL_GPIO_ReadPin(SW_UP)) {
set->val.temp_units = TEMP_UNITS_FAHRENHEIT;
}
else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
set->val.temp_units = TEMP_UNITS_CELSIUS;
}
// Event Handler
// N/A
} break;
case STATE_SETTEMPOFFSET:
{
// Write text to OLED
// [ therm :: set temp offset ]
// [ g = 12 ]
ssd1306_drawstring("Temp Cal Offset", 0, 40);
ssd1306_drawlogo();
char tempstr[6];
itoa(set->val.temp_offset, tempstr, 10);
ssd1306_drawstring("O=", 1, 45);
ssd1306_drawstring(" ", 1, 57);
ssd1306_drawstring(tempstr, 1, 57);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
flash_save(set);
status->state = STATE_IDLE;
}
else {
user_input_signed((int16_t*)(&set->val.temp_offset));
}
// Event Handler
// N/A
} break;
case STATE_PREHEAT:
{
// Write text to OLED
// [ therm : preheating brew ]
// [ 30 => 120 C ]
ssd1306_drawstring("Preheating...", 0, 0);
//ssd1306_drawlogo();
draw_setpoint(status);
status->pid_enabled = 1;
status->setpoint = set->val.setpoint_brew;
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_IDLE;
}
else {
user_input((uint16_t*)&set->val.setpoint_brew);
}
// Event Handler
if(status->temp >= status->setpoint) {
status->state = STATE_MAINTAIN;
}
} break;
case STATE_MAINTAIN:
{
// Write text to OLED
// [ therm : ready to brew ]
// [ 30 => 120 C ]
ssd1306_drawstring("Preheated!", 0, 0);
//ssd1306_drawlogo();
draw_setpoint(status);
status->pid_enabled = 1;
status->setpoint = set->val.setpoint_brew;
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_IDLE;
}
else {
user_input((uint16_t*)&set->val.setpoint_brew);
}
// Event Handler
// N/A
} break;
// Thermocouple error
case STATE_TC_ERROR:
{
// Write text to OLED
// [ therm : ready to steam ]
// [ 30 => 120 C ]
ssd1306_drawstring("Error: ", 0, 0);
char tempstr[6];
itoa(status->error_code, tempstr, 10);
ssd1306_drawstring(tempstr, 0, 57);
//TODO: add RTD error codes
if(status->error_code == 1)
ssd1306_drawstring(" TC Open Circuit", 1, 0);
else if(status->error_code == 4)
ssd1306_drawstring(" TC Short to GND", 1, 0);
else if(status->error_code == 8)
ssd1306_drawstring(" TC Short to VCC", 1, 0);
else
ssd1306_drawstring("#?, Unknown Error", 1, 0);
ssd1306_drawstring(" ", 2, 0);
ssd1306_drawstring("-> to ignore all or", 2, 0);
ssd1306_drawstring("press to continue", 3, 0);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_IDLE;
#ifdef MAX31865_RTD_SENSOR
max31865_clear_errors(spi_get());
#endif
}
else if(SW_RIGHT_PRESSED) {
set->val.ignore_error = 1;
status->state = STATE_IDLE;
}
// Event Handler
// Maybe handle if TC is plugged in
// N/A
} break;
// Reset state
case STATE_RESET:
{
// Write text to OLED
// [ therm :: reset ]
ssd1306_drawstring("therm :: reset ", 0, 40);
status->pid_enabled = 0;
ssd1306_drawlogo();
switch(reset_mode) {
case RESET_DEFAULTS:
{
ssd1306_drawstring("-> defaults ", 1, 40);
} break;
case RESET_BOOTLOADER:
{
ssd1306_drawstring("-> bootloader ", 1, 40);
} break;
case RESET_REBOOT:
{
ssd1306_drawstring("-> reboot ", 1, 40);
} break;
case RESET_EXIT:
{
ssd1306_drawstring("-> exit ", 1, 40);
} break;
}
// Button handler
if(SW_BTN_PRESSED) {
switch(reset_mode) {
case RESET_BOOTLOADER:
{
ssd1306_clearscreen();
ssd1306_drawstring("Bootloader Entered", 0, 0);
ssd1306_drawstring("Device won't boot", 2, 0);
ssd1306_drawstring("until reflashed!", 3, 0);
HAL_Delay(1000);
bootloader_enter(); // Resets into bootloader
status->state = STATE_RESET; // Just in case
} break;
case RESET_DEFAULTS:
{
status->state = STATE_RESET;
flash_load_defaults(set);
flash_save(set);
NVIC_SystemReset();
} break;
case RESET_REBOOT:
{
status->state = STATE_RESET;
NVIC_SystemReset();
} break;
case RESET_EXIT:
{
status->state = STATE_IDLE;
} break;
}
}
else if(SW_DOWN_PRESSED && reset_mode < (RESET_SIZE-1)) {
reset_mode++;
}
else if(SW_UP_PRESSED && reset_mode > 0) {
reset_mode--;
}
// Event Handler
// N/A
} break;
// Something is terribly wrong
default:
{
status->state = STATE_IDLE;
status->pid_enabled = 0;
} break;
}
if(last_state != status->state) {
// Clear screen on state change
goto_mode = MODE_HEAT;
trigger_drawsetpoint = 1;
ssd1306_clearscreen();
}
// Last buttonpress
sw_btn_last = sw_btn;
sw_up_last = sw_up;
sw_down_last = sw_down;
sw_left_last = sw_left;
sw_right_last = sw_right;
}
static int32_t temp_last = 43002;
static int32_t setpoint_last = 10023;
// Draw current setpoint on display
static void draw_setpoint(therm_status_t* status) {
// FIXME: need to do this when switching modes too
if(status->temp != temp_last || trigger_drawsetpoint) {
char tempstr[3];
itoa_fp(status->temp, status->temp_frac, tempstr);
ssd1306_drawstringbig(" ", 3, 0);
ssd1306_drawstringbig(tempstr, 3, 0);
}
if(trigger_drawsetpoint)
ssd1306_drawstringbig(">", 3, 74);
if(status->setpoint != setpoint_last || trigger_drawsetpoint) {
char tempstr[3];
itoa(status->setpoint, tempstr, 10);
ssd1306_drawstringbig(" ", 3, 90);
ssd1306_drawstringbig(tempstr, 3, 90);
}
trigger_drawsetpoint = 0;
setpoint_last = status->setpoint;
temp_last = status->temp;
}
// vim:softtabstop=4 shiftwidth=4 expandtab
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