Stab-STM32/main.c

/*
    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

#include <stdio.h>
#include <string.h>

#include "ch.h"
#include "hal.h"

#include "chprintf.h"

#include "main.h"
#include "st7735.h"

/*===========================================================================*/
/* Generic code.                                                             */
/*===========================================================================*/

/*
 * Blinker thread, times are in milliseconds.
 */
static THD_WORKING_AREA(waThread1, 128);
static __attribute__((noreturn)) THD_FUNCTION(Thread1, arg) {

  (void)arg;
  chRegSetThreadName("blinker");
  while (true) {
    palClearLine(LINE_LED);
    chThdSleepMilliseconds(500);
    palSetLine(LINE_LED);
    chThdSleepMilliseconds(500);
  }
}

/*
 * Application entry point.
 */
int main(void) {
  /*
   * System initializations.
   * - HAL initialization, this also initializes the configured device drivers
   *   and performs the board-specific initializations.
   * - Kernel initialization, the main() function becomes a thread and the
   *   RTOS is active.
   */
  halInit();
  chSysInit();

  /*
   * Initializes a SPI1 driver.
   */
  spiStart(&SPID1, &spi1cfg);
  spiSelectI(&SPID1);

  /*
   * Creates the blinker thread.
   */
  chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);

  /*
   * LCD
   */
  ST7735_Init();
  lcd_MainScreen();
  lcd_ClearMain();

  /*
   * Normal main() thread activity.
   */
  while (true) {
    chThdSleepMilliseconds(500);
  }
}

/*
 * Private functions
 */
/* numbers for screen 160x128 
 * btn1 - 118, 1..38-FontWidh
 * btn2 - 118, 40..78-FontWidh
 * btn3 - 118, 80..118-FontWidh
 * btn4 - 118, 120..158-FontWidh
 * 
 * main screen 0,20 .. 159,117
 */
static void lcd_MainScreen(void) {
  ST7735_FillScreen(Black);

  ST7735_WriteString(47, 48, "Heater", Font_11x18, Yellow, Black);
  ST7735_WriteString(52, 68, "Power", Font_11x18, Yellow, Black);
  ST7735_WriteString(25, 88, "Stabilizer", Font_11x18, Yellow, Black);
  chThdSleepMilliseconds(2000);

  /* top info line */
  ST7735_FillRectangle(0, 18, ST7735_WIDTH, 1, White);
  ST7735_FillRectangle( 119, 0, 1, 18, White); // separator

  ST7735_WriteString(0, 0, "Line V", Font_11x18, Red, Black);
  ST7735_WriteString(120, 0, "Heater W", Font_11x18, Red, Black);

  /* bottom status line */
  ST7735_FillRectangle(0, 117, ST7735_WIDTH, 1, White);
  ST7735_FillRectangle( 39, 117, 1, 11, White); // separator btn1/btn2
  ST7735_FillRectangle( 79, 117, 1, 11, White); // separator btn2/btn3
  ST7735_FillRectangle(119, 117, 1, 11, White); // separator btn3/btn4

  ST7735_WriteString(0, 118, "  +  ", LiberM_7x10, Silver, Black);
  ST7735_WriteString(40, 118, "  -  ", LiberM_7x10, Silver, Black);
  ST7735_WriteString(80, 118, "  R  ", LiberM_7x10, Silver, Black);
  ST7735_WriteString(120, 118, "  S  ", LiberM_7x10, Silver, Black);
}

static void lcd_ClearMain(void) {
  ST7735_FillRectangle(0, 20, ST7735_WIDTH, 97, Black);
}

static void btn1_handler(const button_state_t) {
  if (state == BTN_st_Pressed) {
    ST7735_WriteString(0, 118, "  +  ", LiberM_7x10, Black, Grey);
    chThdSleepMilliseconds(500);
    ST7735_WriteString(0, 118, "  +  ", LiberM_7x10, Silver, Black);
  }
}

static void btn2_handler(const button_state_t) {
  if (state == BTN_st_Pressed) {
    ST7735_WriteString(40, 118, "  -  ", LiberM_7x10, Black, Grey);
    chThdSleepMilliseconds(500);
    ST7735_WriteString(40, 118, "  -  ", LiberM_7x10, Silver, Black);
  }
}

static void btn3_handler(const button_state_t) {
  if (state == BTN_st_Pressed) {
    ST7735_WriteString(80, 118, "  R  ", LiberM_7x10, Black, Grey);
    chThdSleepMilliseconds(500);
    ST7735_WriteString(80, 118, "  R  ", LiberM_7x10, Silver, Black);
  }
}

static void btn4_handler(const button_state_t) {
  if (state == BTN_st_Pressed) {
    ST7735_WriteString(120, 118, "  S  ", LiberM_7x10, Black, Grey);
    chThdSleepMilliseconds(500);
    ST7735_WriteString(120, 118, "  S  ", LiberM_7x10, Silver, Black);
  }
}