Initial bring up, screens, config
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#include <FreeRTOS_SAMD21.h>
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#include <semphr.h>
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#include <Adafruit_NeoPixel.h>
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#include "SPI.h"
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#include "Adafruit_GFX.h"
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#include "Adafruit_ILI9341.h"
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#include <Fonts/FreeMonoBold9pt7b.h>
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#include <Fonts/FreeMonoBold18pt7b.h>
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#include <Fonts/FreeMono12pt7b.h>
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//FreeMono18pt7b.h
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//FreeMono24pt7b.h
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//FreeMono9pt7b.h
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//FreeMonoBold12pt7b.h
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//FreeMonoBold18pt7b.h
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//FreeMonoBold24pt7b.h
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//FreeMonoBold9pt7b.h
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// Various tunables
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#define ERROR_LED_PIN 13
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#define ERROR_LED_LIGHTUP_STATE HIGH
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#define PIXEL_PIN 40 // pin of pixel
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#define PIXEL_MAX_BRIGHTNESS 48 // 255 max
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#define PIXEL_MIN_BRIGHTNESS 4 // 0 min
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#define BREATHE_DELAY 5 // milliseconds
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#define BUTTON_UP 6 // MUST be an interrupt pin
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#define BUTTON_DOWN 5 // MUST be an interrupt pin
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#define BUTTON_OK 7 // MUST be an interrupt pin
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// TFT pins
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#define TFT_DC 9
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#define TFT_CS 10
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#define TFT_MOSI 13
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#define TFT_CLK 12
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#define TFT_RST 8
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#define TFT_MISO 11
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// Init hardware used in tasks
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Adafruit_NeoPixel pixel(1, PIXEL_PIN, NEO_GRB + NEO_KHZ800);
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// Adafruit 2.2 TFT -- 320x240 resolution, up to 18-bit (262,144) color
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// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC
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//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
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// If using the breakout, change pins as desired
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Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO);
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// Button Semaphores
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SemaphoreHandle_t sem_btn_up;
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SemaphoreHandle_t sem_btn_down;
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SemaphoreHandle_t sem_btn_ok;
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// define two tasks for Blink & AnalogRead
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void TaskBlink( void *pvParameters );
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void InterruptHandlerButtonUp();
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void InterruptHandlerButtonDown();
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void InterruptHandlerButtonOk();
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void TaskLCD(void *pvParameters);
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// UI screens
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void screenClear();
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void screenSoilStemma();
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void screenSoilCatnip();
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void screenWaterLevelETape();
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// Color conversion (RGB888 -> RGB565 used by Adafruit GFX)
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uint16_t RGB565(uint8_t r, uint8_t g, uint8_t b) {
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return ((r & 0b11111000) << 8) | ((g & 0b11111100) << 3) | (b >> 3);
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}
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// the setup function runs once when you press reset or power the board
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void setup() {
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vNopDelayMS(1000); // prevents usb driver crash on startup, do not omit this
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// Set the led the rtos will blink when we have a fatal rtos error
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// RTOS also Needs to know if high/low is the state that turns on the led.
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// Error Blink Codes:
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// 3 blinks - Fatal Rtos Error, something bad happened. Think really hard about what you just changed.
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// 2 blinks - Malloc Failed, Happens when you couldnt create a rtos object.
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// Probably ran out of heap.
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// 1 blink - Stack overflow, Task needs more bytes defined for its stack!
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// Use the taskMonitor thread to help gauge how much more you need
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vSetErrorLed(ERROR_LED_PIN, ERROR_LED_LIGHTUP_STATE);
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// initialize serial communication at 9600 bits per second:
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//Serial.begin(9600);
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//while (!Serial) {
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// ; // wait for serial port to connect. Needed for native USB, on LEONARDO, MICRO, YUN, and other 32u4 based boards.
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//}
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pixel.begin();
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pixel.clear();
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pixel.setBrightness(PIXEL_MAX_BRIGHTNESS);
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pixel.setPixelColor(0, pixel.Color(0, 0, 255));
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pixel.show();
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tft.begin();
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tft.setRotation(3);
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screenClear();
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tft.setFont(&FreeMonoBold18pt7b);
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tft.setCursor(tft.width() / 2 - 138, tft.height() / 2 + 10);
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tft.println("Press Up/Down");
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pinMode(BUTTON_UP, INPUT_PULLUP);
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pinMode(BUTTON_DOWN, INPUT_PULLUP);
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pinMode(BUTTON_OK, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(BUTTON_UP), InterruptHandlerButtonUp, RISING);
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attachInterrupt(digitalPinToInterrupt(BUTTON_DOWN), InterruptHandlerButtonDown, RISING);
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attachInterrupt(digitalPinToInterrupt(BUTTON_OK), InterruptHandlerButtonOk, RISING);
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sem_btn_up = xSemaphoreCreateBinary();
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sem_btn_down = xSemaphoreCreateBinary();
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sem_btn_ok = xSemaphoreCreateBinary();
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// Now set up two tasks to run independently.
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xTaskCreate(
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TaskBlink
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, (const portCHAR *)"Blink" // A name just for humans
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, 128 // This stack size can be checked & adjusted by reading the Stack Highwater
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, NULL
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, 0 // Priority, with 3 (configMAX_PRIORITIES - 1) being the highest, and 0 being the lowest.
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, NULL );
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xTaskCreate(
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TaskLCD
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, (const portCHAR *)"LCD" // A name just for humans
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, 128 // This stack size can be checked & adjusted by reading the Stack Highwater
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, NULL
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, 2 // Priority, with 3 (configMAX_PRIORITIES - 1) being the highest, and 0 being the lowest.
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, NULL );
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// Now the task scheduler, which takes over control of scheduling individual tasks, is automatically started.
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vTaskStartScheduler();
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}
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void loop() {
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// Empty. Things are done in Tasks.
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}
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/*--------------------------------------------------*/
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/*---------------------- Tasks ---------------------*/
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/*--------------------------------------------------*/
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void TaskBlink(void *pvParameters) {
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(void) pvParameters;
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while (1) {
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pixel.setPixelColor(0, pixel.Color(0, 255, 0)); // Pulse heartbeat green -- reset in case another task interrupts w/ a different color
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for (int i = PIXEL_MIN_BRIGHTNESS ; i < PIXEL_MAX_BRIGHTNESS ; i++) {
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pixel.setBrightness(i);
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pixel.show();
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vTaskDelay( 50 / portTICK_PERIOD_MS );
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}
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for (int i = PIXEL_MAX_BRIGHTNESS ; i > PIXEL_MIN_BRIGHTNESS ; i--) {
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pixel.setBrightness(i);
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pixel.show();
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vTaskDelay( 50 / portTICK_PERIOD_MS );
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}
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}
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}
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void TaskLCD(void *pvParameters) {
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(void) pvParameters;
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void (*screens[3])() = {screenSoilStemma, screenSoilCatnip, screenWaterLevelETape};
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int current = 0;
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while (1) {
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if (xSemaphoreTake(sem_btn_up, 50 / portTICK_PERIOD_MS) == pdPASS) {
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screenClear();
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tft.fillRect(tft.width() - 50, 0, 50, 20, RGB565(0, 0, 0));
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tft.setFont(&FreeMonoBold9pt7b);
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tft.setCursor(tft.width() - 50, 15);
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tft.print("Up");
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current++;
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if (current >= sizeof(screens) / sizeof(screens[0])) {
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current = 0;
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}
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screens[current]();
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}
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if (xSemaphoreTake(sem_btn_down, 50 / portTICK_PERIOD_MS) == pdPASS) {
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screenClear();
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tft.fillRect(tft.width() - 50, 0, 50, 20, RGB565(0, 0, 0));
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tft.setFont(&FreeMonoBold9pt7b);
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tft.setCursor(tft.width() - 50, 15);
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tft.print("Down");
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current--;
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if (current < 0) {
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current = sizeof(screens) / sizeof(screens[0]) - 1;
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}
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screens[current]();
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}
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if (xSemaphoreTake(sem_btn_ok, 50 / portTICK_PERIOD_MS) == pdPASS) {
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tft.fillRect(tft.width() - 50, 0, 50, 20, RGB565(0, 0, 0));
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tft.setFont(&FreeMonoBold9pt7b);
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tft.setCursor(tft.width() - 50, 15);
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tft.print("OK");
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}
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}
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}
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void InterruptHandlerButtonUp() {
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xSemaphoreGiveFromISR(sem_btn_up, NULL);
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}
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void InterruptHandlerButtonDown() {
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xSemaphoreGiveFromISR(sem_btn_down, NULL);
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}
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void InterruptHandlerButtonOk() {
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xSemaphoreGiveFromISR(sem_btn_ok, NULL);
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}
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void screenClear() {
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tft.setCursor(0, 0);
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tft.fillScreen(RGB565(0, 0, 0));
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}
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void screenSoilStemma() {
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tft.setFont(&FreeMonoBold18pt7b);
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tft.setCursor(0, 25);
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tft.println("Soil");
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tft.setFont(&FreeMono12pt7b);
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tft.println("Adafruit STEMMA");
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tft.println("Soil Sensor");
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tft.println("i2c address: 0x36");
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tft.println("seesaw address: 0x36");
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tft.println("");
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tft.setFont(&FreeMonoBold9pt7b);
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tft.println("--Press OK To Read Value--");
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tft.println("");
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tft.println("Value: [value]");
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}
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void screenSoilCatnip() {
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tft.setFont(&FreeMonoBold18pt7b);
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tft.setCursor(0, 25);
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tft.println("Soil");
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tft.setFont(&FreeMono12pt7b);
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tft.println("Catnip Soil Sensor");
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tft.println("i2c address: 0x20");
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tft.println("");
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tft.setFont(&FreeMonoBold9pt7b);
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tft.println("--Press OK To Read Value--");
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tft.println("");
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tft.println("Capacitance: [value]");
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tft.println("Temperature: [value]");
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tft.println("Light: [value]");
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}
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void screenWaterLevelETape() {
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tft.setFont(&FreeMonoBold18pt7b);
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tft.setCursor(0, 25);
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tft.println("Water Level");
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tft.setFont(&FreeMono12pt7b);
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tft.println("Milone eTape");
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tft.println("Analog Pin #0");
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tft.println("");
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tft.setFont(&FreeMonoBold9pt7b);
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tft.println("--Press OK To Read Value--");
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tft.println("");
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tft.println("Value: [value]");
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}
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