1 | /* USER CODE BEGIN Header */
|
2 | /**
|
3 | ******************************************************************************
|
4 | * @file : main.c
|
5 | * @brief : Main program body
|
6 | ******************************************************************************
|
7 | * @attention
|
8 | *
|
9 | * <h2><center>© Copyright (c) 2019 STMicroelectronics.
|
10 | * All rights reserved.</center></h2>
|
11 | *
|
12 | * This software component is licensed by ST under BSD 3-Clause license,
|
13 | * the "License"; You may not use this file except in compliance with the
|
14 | * License. You may obtain a copy of the License at:
|
15 | * opensource.org/licenses/BSD-3-Clause
|
16 | *
|
17 | ******************************************************************************
|
18 | */
|
19 | /* USER CODE END Header */
|
20 |
|
21 | /* Includes ------------------------------------------------------------------*/
|
22 | #include "main.h"
|
23 |
|
24 | /* Private includes ----------------------------------------------------------*/
|
25 | /* USER CODE BEGIN Includes */
|
26 |
|
27 | /* USER CODE END Includes */
|
28 |
|
29 | /* Private typedef -----------------------------------------------------------*/
|
30 | /* USER CODE BEGIN PTD */
|
31 |
|
32 | /* USER CODE END PTD */
|
33 |
|
34 | /* Private define ------------------------------------------------------------*/
|
35 | /* USER CODE BEGIN PD */
|
36 | #define LED_PortC GPIO_PIN_12
|
37 | #define LCD_CS_PortC GPIO_PIN_10
|
38 | #define LCD_DC_PortB GPIO_PIN_2
|
39 | #define LCD_Reset_PortC GPIO_PIN_7
|
40 | /* USER CODE END PD */
|
41 |
|
42 | /* Private macro -------------------------------------------------------------*/
|
43 | /* USER CODE BEGIN PM */
|
44 | #define LED_On() GPIOC->BRR |= LED_PortC
|
45 | #define LED_Off() GPIOC->BSRR |= LED_PortC
|
46 |
|
47 | #define LCD_CS_Hi() GPIOC->BSRR |= LCD_CS_PortC
|
48 | #define LCD_CS_Lo() GPIOC->BRR |= LCD_CS_PortC
|
49 |
|
50 | #define LCD_Data() GPIOB->BSRR |= LCD_DC_PortB
|
51 | #define LCD_Command() GPIOB->BRR |= LCD_DC_PortB
|
52 |
|
53 | #define LCD_Reset_Lo() GPIOC->BRR |= LCD_Reset_PortC
|
54 | #define LCD_Reset_Hi() GPIOC->BSRR |= LCD_Reset_PortC
|
55 |
|
56 | // Display Function Set = 0 0 1 0 0 PD V H
|
57 | // PD=PowerDown 0=Chip active - 1=CHip in PowerDown
|
58 | // V=Vertical-Mode 0=Horizontal-Adressing - 1=Vertical Adressing
|
59 | // H=0 Basic Instruction H=1 Extended Instruction
|
60 | // => PD=0 V=0 H=0 => 0010 0000 = 0x20
|
61 | #define Disp_FunctionSet 0x20
|
62 | #define Disp_FunctionSet_H 0x21
|
63 |
|
64 | // BankX = 0 1 0 0 0 Y2 Y1 Y0
|
65 | #define Bank0 0x40
|
66 | #define Bank1 0x41
|
67 | #define Bank2 0x42
|
68 | #define Bank3 0x43
|
69 | #define Bank4 0x44
|
70 | #define Bank5 0x45
|
71 |
|
72 | // Display-Control bei DC=0=Command 0000 1D0E
|
73 | // und H=0
|
74 | // Blank D=0 E=0 = 0000 1000 = 0x08
|
75 | // Normal-Mode D=1 E=0 = 0000 1100 = 0x0C
|
76 | // All-Displaysegments D=0 E=1 = 0000 1001 = 0x09
|
77 | // Invers D=1 E=1 = 0000 1101 = 0x0D
|
78 | #define Disp_Ctrl_Blank 0x08
|
79 | #define Disp_Ctrl_Norm 0x0C
|
80 | #define Disp_Ctrl_All 0x09
|
81 | #define Disp_Ctrl_Inv 0x0D
|
82 |
|
83 | /* USER CODE END PM */
|
84 |
|
85 | /* Private variables ---------------------------------------------------------*/
|
86 | SPI_HandleTypeDef hspi1;
|
87 |
|
88 | /* USER CODE BEGIN PV */
|
89 | HAL_StatusTypeDef spi1_status;
|
90 | /* USER CODE END PV */
|
91 |
|
92 | /* Private function prototypes -----------------------------------------------*/
|
93 | void SystemClock_Config(void);
|
94 | static void MX_GPIO_Init(void);
|
95 | static void MX_SPI1_Init(void);
|
96 |
|
97 | /* USER CODE BEGIN PFP */
|
98 | void myDelay(unsigned long delay);
|
99 | void LCD_Reset(void);
|
100 | void Test_LCD(void);
|
101 | void Write_Data(uint8_t v);
|
102 | /* USER CODE END PFP */
|
103 |
|
104 | /* Private user code ---------------------------------------------------------*/
|
105 | /* USER CODE BEGIN 0 */
|
106 |
|
107 | /* USER CODE END 0 */
|
108 |
|
109 | /**
|
110 | * @brief The application entry point.
|
111 | * @retval int
|
112 | */
|
113 | int main(void)
|
114 | {
|
115 | /* USER CODE BEGIN 1 */
|
116 |
|
117 | /* USER CODE END 1 */
|
118 |
|
119 | /* MCU Configuration--------------------------------------------------------*/
|
120 |
|
121 | /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
|
122 | // Schön wärs, aber dann läuft der Debugger nich...
|
123 | // auskommentiert und damit gehts weiter.
|
124 | //HAL_Init();
|
125 |
|
126 | /* USER CODE BEGIN Init */
|
127 |
|
128 | /* USER CODE END Init */
|
129 |
|
130 | /* Configure the system clock */
|
131 | SystemClock_Config();
|
132 |
|
133 | /* USER CODE BEGIN SysInit */
|
134 |
|
135 | /* USER CODE END SysInit */
|
136 |
|
137 | /* Initialize all configured peripherals */
|
138 | MX_GPIO_Init();
|
139 | MX_SPI1_Init();
|
140 |
|
141 | /* USER CODE BEGIN 2 */
|
142 | uint8_t k=0,k1=0;
|
143 | LCD_Reset();
|
144 | LCD_CS_Hi(); // CS auf High damit LCD deaktiviert
|
145 | Test_LCD();
|
146 | LED_Off();
|
147 | /* USER CODE END 2 */
|
148 |
|
149 | /* Infinite loop */
|
150 | /* USER CODE BEGIN WHILE */
|
151 | LCD_Data(); //D/C = High => Data
|
152 |
|
153 | while (1)
|
154 | {
|
155 | /* USER CODE BEGIN 3 */
|
156 | LED_Off();
|
157 | myDelay(500000);
|
158 | LED_On();
|
159 | myDelay(500000);
|
160 | k+=1;
|
161 | if (k >= 0x1F) { k = 0; }
|
162 | k1 = k & 0x1F; // vordere 3 Bits ausblenden sonst inverse Darstellung
|
163 | //k1=0x1F;
|
164 | Write_Data(k1);
|
165 |
|
166 | /* USER CODE END 3 */
|
167 | }
|
168 | /* USER CODE END WHILE */
|
169 | }
|
170 |
|
171 | /**
|
172 | * @brief System Clock Configuration
|
173 | * @retval None
|
174 | */
|
175 | void SystemClock_Config(void)
|
176 | {
|
177 | RCC_OscInitTypeDef RCC_OscInitStruct = {0};
|
178 | RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
|
179 |
|
180 | /** Initializes the CPU, AHB and APB busses clocks
|
181 | */
|
182 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
|
183 | RCC_OscInitStruct.HSIState = RCC_HSI_ON;
|
184 | RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
|
185 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
|
186 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
|
187 | {
|
188 | Error_Handler();
|
189 | }
|
190 | /** Initializes the CPU, AHB and APB busses clocks
|
191 | */
|
192 | RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|
193 | |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
|
194 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
|
195 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
|
196 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
|
197 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
|
198 |
|
199 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
|
200 | {
|
201 | Error_Handler();
|
202 | }
|
203 | }
|
204 |
|
205 | /**
|
206 | * @brief SPI1 Initialization Function
|
207 | * @param None
|
208 | * @retval None
|
209 | */
|
210 | static void MX_SPI1_Init(void)
|
211 | {
|
212 |
|
213 | /* USER CODE BEGIN SPI1_Init 0 */
|
214 |
|
215 | /* USER CODE END SPI1_Init 0 */
|
216 |
|
217 | /* USER CODE BEGIN SPI1_Init 1 */
|
218 |
|
219 | /* USER CODE END SPI1_Init 1 */
|
220 | /* SPI1 parameter configuration*/
|
221 | hspi1.Instance = SPI1;
|
222 | hspi1.Init.Mode = SPI_MODE_MASTER;
|
223 | hspi1.Init.Direction = SPI_DIRECTION_2LINES;
|
224 | hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
|
225 | hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
|
226 | hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
|
227 | hspi1.Init.NSS = SPI_NSS_SOFT;
|
228 | hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
|
229 | hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
|
230 | hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
|
231 | hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
|
232 | hspi1.Init.CRCPolynomial = 7;
|
233 | if (HAL_SPI_Init(&hspi1) != HAL_OK)
|
234 | {
|
235 | Error_Handler();
|
236 | }
|
237 | /* USER CODE BEGIN SPI1_Init 2 */
|
238 |
|
239 | /* USER CODE END SPI1_Init 2 */
|
240 |
|
241 | }
|
242 |
|
243 | /**
|
244 | * @brief GPIO Initialization Function
|
245 | * @param None
|
246 | * @retval None
|
247 | */
|
248 | static void MX_GPIO_Init(void)
|
249 | {
|
250 | GPIO_InitTypeDef GPIO_InitStruct = {0};
|
251 |
|
252 | /* GPIO Ports Clock Enable */
|
253 | __HAL_RCC_GPIOA_CLK_ENABLE();
|
254 | __HAL_RCC_GPIOB_CLK_ENABLE();
|
255 | __HAL_RCC_GPIOC_CLK_ENABLE();
|
256 |
|
257 | /*Configure GPIO pin Output Level */
|
258 | HAL_GPIO_WritePin(GPIOB, GPIO_PIN_2, GPIO_PIN_RESET);
|
259 |
|
260 | /*Configure GPIO pin Output Level */
|
261 | HAL_GPIO_WritePin(GPIOC, GPIO_PIN_7|GPIO_PIN_10|GPIO_PIN_12, GPIO_PIN_RESET);
|
262 |
|
263 | /*Configure GPIO pin : PB2 */
|
264 | GPIO_InitStruct.Pin = GPIO_PIN_2;
|
265 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
|
266 | GPIO_InitStruct.Pull = GPIO_NOPULL;
|
267 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
|
268 | HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
|
269 |
|
270 | /*Configure GPIO pins : PC7 PC10 PC12 */
|
271 | GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_10|GPIO_PIN_12;
|
272 | GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
|
273 | GPIO_InitStruct.Pull = GPIO_NOPULL;
|
274 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
|
275 | HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
|
276 |
|
277 | /*Configure GPIO pin : PA5 PA7 war nicht notwendig LCD geht trotzdem nicht*/
|
278 | GPIO_InitStruct.Pin = GPIO_PIN_5 | GPIO_PIN_7;
|
279 | GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
|
280 | //GPIO_InitStruct.Pull = GPIO_NOPULL;
|
281 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
|
282 | HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
|
283 | //GPIO_PinRemapConfig(GPIO_Remap_SPI1, DISABLE);
|
284 | }
|
285 |
|
286 | /* USER CODE BEGIN 4 */
|
287 | /**-------------------------------------------------------------------------
|
288 | * @brief This function is to delay some seconds.
|
289 | * @retval None
|
290 | * ------------------------------------------------------------------------
|
291 | */
|
292 | void myDelay(unsigned long delay)
|
293 | {
|
294 | while(delay)
|
295 | {
|
296 | delay=delay-1;
|
297 | if (delay == 0) break;
|
298 | asm volatile ("nop");
|
299 | }
|
300 | }
|
301 |
|
302 | void LCD_Reset(void)
|
303 | {
|
304 | LCD_CS_Lo(); // Enable auf High damit LCD aktiviert
|
305 | LCD_Reset_Lo();
|
306 | myDelay(10000); // RST f. 10us auf Low dann wieder High
|
307 | LCD_Reset_Hi();
|
308 | LCD_CS_Hi();
|
309 | }
|
310 |
|
311 | void Test_LCD(void)
|
312 | {
|
313 | uint8_t k1=0;
|
314 |
|
315 | LCD_Command(); // D/C = Low => Command
|
316 | Write_Data(Disp_FunctionSet_H);
|
317 | k1=0x90;
|
318 | Write_Data(k1);
|
319 | Write_Data(Disp_FunctionSet);
|
320 | Write_Data(Disp_Ctrl_Inv);
|
321 | }
|
322 |
|
323 | void Write_Data(uint8_t v)
|
324 | {
|
325 | uint8_t k1=0;
|
326 | uint32_t timeout=2,error;
|
327 |
|
328 | //PCD8544_CS_L();
|
329 | //PCD8544_DATA();
|
330 | //SPI_I2S_SendData(SPI1, Data);
|
331 | //while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET);
|
332 | //PCD8544_CS_H();
|
333 | LCD_CS_Lo(); // LCD aktivieren
|
334 | k1 = v;
|
335 | spi1_status = HAL_SPI_Transmit(&hspi1,&k1,1,timeout);
|
336 | while(spi1_status == HAL_BUSY);
|
337 | LCD_CS_Hi(); // LCD deaktivieren
|
338 | error = HAL_SPI_GetError(&hspi1);
|
339 | if (error != 0)
|
340 | {
|
341 | Error_Handler();
|
342 | }
|
343 | myDelay(100);
|
344 | }
|
345 |
|
346 | /* USER CODE END 4 */
|
347 |
|
348 | /**
|
349 | * @brief This function is executed in case of error occurrence.
|
350 | * @retval None
|
351 | */
|
352 | void Error_Handler(void)
|
353 | {
|
354 | /* USER CODE BEGIN Error_Handler_Debug */
|
355 | /* User can add his own implementation to report the HAL error return state */
|
356 | int i=1;
|
357 | for (i=1;i<=5;i++)
|
358 | {
|
359 | /* USER CODE BEGIN 3 */
|
360 | LED_Off();
|
361 | myDelay(50000);
|
362 | LED_On();
|
363 | myDelay(50000);
|
364 | /* USER CODE END 3 */
|
365 | }
|
366 | myDelay(500000);
|
367 |
|
368 | /* USER CODE END Error_Handler_Debug */
|
369 | }
|
370 |
|
371 | #ifdef USE_FULL_ASSERT
|
372 | /**
|
373 | * @brief Reports the name of the source file and the source line number
|
374 | * where the assert_param error has occurred.
|
375 | * @param file: pointer to the source file name
|
376 | * @param line: assert_param error line source number
|
377 | * @retval None
|
378 | */
|
379 | void assert_failed(uint8_t *file, uint32_t line)
|
380 | {
|
381 | /* USER CODE BEGIN 6 */
|
382 | /* User can add his own implementation to report the file name and line number,
|
383 | tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
|
384 | /* USER CODE END 6 */
|
385 | }
|
386 | #endif /* USE_FULL_ASSERT */
|
387 |
|
388 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|