1 |
582 |
jeremybenn |
/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
|
2 |
|
|
* File Name : stm32f10x_gpio.c
|
3 |
|
|
* Author : MCD Application Team
|
4 |
|
|
* Version : V2.0.1
|
5 |
|
|
* Date : 06/13/2008
|
6 |
|
|
* Description : This file provides all the GPIO firmware functions.
|
7 |
|
|
********************************************************************************
|
8 |
|
|
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
|
9 |
|
|
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
|
10 |
|
|
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
|
11 |
|
|
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
|
12 |
|
|
* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
|
13 |
|
|
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
14 |
|
|
*******************************************************************************/
|
15 |
|
|
|
16 |
|
|
/* Includes ------------------------------------------------------------------*/
|
17 |
|
|
#include "stm32f10x_gpio.h"
|
18 |
|
|
#include "stm32f10x_rcc.h"
|
19 |
|
|
|
20 |
|
|
/* Private typedef -----------------------------------------------------------*/
|
21 |
|
|
/* Private define ------------------------------------------------------------*/
|
22 |
|
|
/* ------------ RCC registers bit address in the alias region ----------- */
|
23 |
|
|
#define AFIO_OFFSET (AFIO_BASE - PERIPH_BASE)
|
24 |
|
|
|
25 |
|
|
/* --- EVENTCR Register ---*/
|
26 |
|
|
/* Alias word address of EVOE bit */
|
27 |
|
|
#define EVCR_OFFSET (AFIO_OFFSET + 0x00)
|
28 |
|
|
#define EVOE_BitNumber ((u8)0x07)
|
29 |
|
|
#define EVCR_EVOE_BB (PERIPH_BB_BASE + (EVCR_OFFSET * 32) + (EVOE_BitNumber * 4))
|
30 |
|
|
|
31 |
|
|
#define EVCR_PORTPINCONFIG_MASK ((u16)0xFF80)
|
32 |
|
|
#define LSB_MASK ((u16)0xFFFF)
|
33 |
|
|
#define DBGAFR_POSITION_MASK ((u32)0x000F0000)
|
34 |
|
|
#define DBGAFR_SWJCFG_MASK ((u32)0xF0FFFFFF)
|
35 |
|
|
#define DBGAFR_LOCATION_MASK ((u32)0x00200000)
|
36 |
|
|
#define DBGAFR_NUMBITS_MASK ((u32)0x00100000)
|
37 |
|
|
|
38 |
|
|
/* Private macro -------------------------------------------------------------*/
|
39 |
|
|
/* Private variables ---------------------------------------------------------*/
|
40 |
|
|
/* Private function prototypes -----------------------------------------------*/
|
41 |
|
|
/* Private functions ---------------------------------------------------------*/
|
42 |
|
|
|
43 |
|
|
/*******************************************************************************
|
44 |
|
|
* Function Name : GPIO_DeInit
|
45 |
|
|
* Description : Deinitializes the GPIOx peripheral registers to their default
|
46 |
|
|
* reset values.
|
47 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
48 |
|
|
* Output : None
|
49 |
|
|
* Return : None
|
50 |
|
|
*******************************************************************************/
|
51 |
|
|
void GPIO_DeInit(GPIO_TypeDef* GPIOx)
|
52 |
|
|
{
|
53 |
|
|
/* Check the parameters */
|
54 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
55 |
|
|
|
56 |
|
|
switch (*(u32*)&GPIOx)
|
57 |
|
|
{
|
58 |
|
|
case GPIOA_BASE:
|
59 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, ENABLE);
|
60 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, DISABLE);
|
61 |
|
|
break;
|
62 |
|
|
|
63 |
|
|
case GPIOB_BASE:
|
64 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, ENABLE);
|
65 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, DISABLE);
|
66 |
|
|
break;
|
67 |
|
|
|
68 |
|
|
case GPIOC_BASE:
|
69 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, ENABLE);
|
70 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE);
|
71 |
|
|
break;
|
72 |
|
|
|
73 |
|
|
case GPIOD_BASE:
|
74 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, ENABLE);
|
75 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, DISABLE);
|
76 |
|
|
break;
|
77 |
|
|
|
78 |
|
|
case GPIOE_BASE:
|
79 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, ENABLE);
|
80 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, DISABLE);
|
81 |
|
|
break;
|
82 |
|
|
|
83 |
|
|
case GPIOF_BASE:
|
84 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, ENABLE);
|
85 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, DISABLE);
|
86 |
|
|
break;
|
87 |
|
|
|
88 |
|
|
case GPIOG_BASE:
|
89 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, ENABLE);
|
90 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, DISABLE);
|
91 |
|
|
break;
|
92 |
|
|
|
93 |
|
|
default:
|
94 |
|
|
break;
|
95 |
|
|
}
|
96 |
|
|
}
|
97 |
|
|
|
98 |
|
|
/*******************************************************************************
|
99 |
|
|
* Function Name : GPIO_AFIODeInit
|
100 |
|
|
* Description : Deinitializes the Alternate Functions (remap, event control
|
101 |
|
|
* and EXTI configuration) registers to their default reset
|
102 |
|
|
* values.
|
103 |
|
|
* Input : None
|
104 |
|
|
* Output : None
|
105 |
|
|
* Return : None
|
106 |
|
|
*******************************************************************************/
|
107 |
|
|
void GPIO_AFIODeInit(void)
|
108 |
|
|
{
|
109 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, ENABLE);
|
110 |
|
|
RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, DISABLE);
|
111 |
|
|
}
|
112 |
|
|
|
113 |
|
|
/*******************************************************************************
|
114 |
|
|
* Function Name : GPIO_Init
|
115 |
|
|
* Description : Initializes the GPIOx peripheral according to the specified
|
116 |
|
|
* parameters in the GPIO_InitStruct.
|
117 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
118 |
|
|
* - GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
|
119 |
|
|
* contains the configuration information for the specified GPIO
|
120 |
|
|
* peripheral.
|
121 |
|
|
* Output : None
|
122 |
|
|
* Return : None
|
123 |
|
|
*******************************************************************************/
|
124 |
|
|
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
|
125 |
|
|
{
|
126 |
|
|
u32 currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00;
|
127 |
|
|
u32 tmpreg = 0x00, pinmask = 0x00;
|
128 |
|
|
|
129 |
|
|
/* Check the parameters */
|
130 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
131 |
|
|
assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));
|
132 |
|
|
assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));
|
133 |
|
|
|
134 |
|
|
/*---------------------------- GPIO Mode Configuration -----------------------*/
|
135 |
|
|
currentmode = ((u32)GPIO_InitStruct->GPIO_Mode) & ((u32)0x0F);
|
136 |
|
|
|
137 |
|
|
if ((((u32)GPIO_InitStruct->GPIO_Mode) & ((u32)0x10)) != 0x00)
|
138 |
|
|
{
|
139 |
|
|
/* Check the parameters */
|
140 |
|
|
assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));
|
141 |
|
|
/* Output mode */
|
142 |
|
|
currentmode |= (u32)GPIO_InitStruct->GPIO_Speed;
|
143 |
|
|
}
|
144 |
|
|
|
145 |
|
|
/*---------------------------- GPIO CRL Configuration ------------------------*/
|
146 |
|
|
/* Configure the eight low port pins */
|
147 |
|
|
if (((u32)GPIO_InitStruct->GPIO_Pin & ((u32)0x00FF)) != 0x00)
|
148 |
|
|
{
|
149 |
|
|
tmpreg = GPIOx->CRL;
|
150 |
|
|
|
151 |
|
|
for (pinpos = 0x00; pinpos < 0x08; pinpos++)
|
152 |
|
|
{
|
153 |
|
|
pos = ((u32)0x01) << pinpos;
|
154 |
|
|
/* Get the port pins position */
|
155 |
|
|
currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
|
156 |
|
|
|
157 |
|
|
if (currentpin == pos)
|
158 |
|
|
{
|
159 |
|
|
pos = pinpos << 2;
|
160 |
|
|
/* Clear the corresponding low control register bits */
|
161 |
|
|
pinmask = ((u32)0x0F) << pos;
|
162 |
|
|
tmpreg &= ~pinmask;
|
163 |
|
|
|
164 |
|
|
/* Write the mode configuration in the corresponding bits */
|
165 |
|
|
tmpreg |= (currentmode << pos);
|
166 |
|
|
|
167 |
|
|
/* Reset the corresponding ODR bit */
|
168 |
|
|
if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
|
169 |
|
|
{
|
170 |
|
|
GPIOx->BRR = (((u32)0x01) << pinpos);
|
171 |
|
|
}
|
172 |
|
|
/* Set the corresponding ODR bit */
|
173 |
|
|
if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
|
174 |
|
|
{
|
175 |
|
|
GPIOx->BSRR = (((u32)0x01) << pinpos);
|
176 |
|
|
}
|
177 |
|
|
}
|
178 |
|
|
}
|
179 |
|
|
GPIOx->CRL = tmpreg;
|
180 |
|
|
}
|
181 |
|
|
|
182 |
|
|
/*---------------------------- GPIO CRH Configuration ------------------------*/
|
183 |
|
|
/* Configure the eight high port pins */
|
184 |
|
|
if (GPIO_InitStruct->GPIO_Pin > 0x00FF)
|
185 |
|
|
{
|
186 |
|
|
tmpreg = GPIOx->CRH;
|
187 |
|
|
for (pinpos = 0x00; pinpos < 0x08; pinpos++)
|
188 |
|
|
{
|
189 |
|
|
pos = (((u32)0x01) << (pinpos + 0x08));
|
190 |
|
|
/* Get the port pins position */
|
191 |
|
|
currentpin = ((GPIO_InitStruct->GPIO_Pin) & pos);
|
192 |
|
|
if (currentpin == pos)
|
193 |
|
|
{
|
194 |
|
|
pos = pinpos << 2;
|
195 |
|
|
/* Clear the corresponding high control register bits */
|
196 |
|
|
pinmask = ((u32)0x0F) << pos;
|
197 |
|
|
tmpreg &= ~pinmask;
|
198 |
|
|
|
199 |
|
|
/* Write the mode configuration in the corresponding bits */
|
200 |
|
|
tmpreg |= (currentmode << pos);
|
201 |
|
|
|
202 |
|
|
/* Reset the corresponding ODR bit */
|
203 |
|
|
if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
|
204 |
|
|
{
|
205 |
|
|
GPIOx->BRR = (((u32)0x01) << (pinpos + 0x08));
|
206 |
|
|
}
|
207 |
|
|
/* Set the corresponding ODR bit */
|
208 |
|
|
if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
|
209 |
|
|
{
|
210 |
|
|
GPIOx->BSRR = (((u32)0x01) << (pinpos + 0x08));
|
211 |
|
|
}
|
212 |
|
|
}
|
213 |
|
|
}
|
214 |
|
|
GPIOx->CRH = tmpreg;
|
215 |
|
|
}
|
216 |
|
|
}
|
217 |
|
|
|
218 |
|
|
/*******************************************************************************
|
219 |
|
|
* Function Name : GPIO_StructInit
|
220 |
|
|
* Description : Fills each GPIO_InitStruct member with its default value.
|
221 |
|
|
* Input : - GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure
|
222 |
|
|
* which will be initialized.
|
223 |
|
|
* Output : None
|
224 |
|
|
* Return : None
|
225 |
|
|
*******************************************************************************/
|
226 |
|
|
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
|
227 |
|
|
{
|
228 |
|
|
/* Reset GPIO init structure parameters values */
|
229 |
|
|
GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All;
|
230 |
|
|
GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz;
|
231 |
|
|
GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
232 |
|
|
}
|
233 |
|
|
|
234 |
|
|
/*******************************************************************************
|
235 |
|
|
* Function Name : GPIO_ReadInputDataBit
|
236 |
|
|
* Description : Reads the specified input port pin.
|
237 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
238 |
|
|
* : - GPIO_Pin: specifies the port bit to read.
|
239 |
|
|
* This parameter can be GPIO_Pin_x where x can be (0..15).
|
240 |
|
|
* Output : None
|
241 |
|
|
* Return : The input port pin value.
|
242 |
|
|
*******************************************************************************/
|
243 |
|
|
u8 GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
|
244 |
|
|
{
|
245 |
|
|
u8 bitstatus = 0x00;
|
246 |
|
|
|
247 |
|
|
/* Check the parameters */
|
248 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
249 |
|
|
assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
|
250 |
|
|
|
251 |
|
|
if ((GPIOx->IDR & GPIO_Pin) != (u32)Bit_RESET)
|
252 |
|
|
{
|
253 |
|
|
bitstatus = (u8)Bit_SET;
|
254 |
|
|
}
|
255 |
|
|
else
|
256 |
|
|
{
|
257 |
|
|
bitstatus = (u8)Bit_RESET;
|
258 |
|
|
}
|
259 |
|
|
return bitstatus;
|
260 |
|
|
}
|
261 |
|
|
|
262 |
|
|
/*******************************************************************************
|
263 |
|
|
* Function Name : GPIO_ReadInputData
|
264 |
|
|
* Description : Reads the specified GPIO input data port.
|
265 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
266 |
|
|
* Output : None
|
267 |
|
|
* Return : GPIO input data port value.
|
268 |
|
|
*******************************************************************************/
|
269 |
|
|
u16 GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
|
270 |
|
|
{
|
271 |
|
|
/* Check the parameters */
|
272 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
273 |
|
|
|
274 |
|
|
return ((u16)GPIOx->IDR);
|
275 |
|
|
}
|
276 |
|
|
|
277 |
|
|
/*******************************************************************************
|
278 |
|
|
* Function Name : GPIO_ReadOutputDataBit
|
279 |
|
|
* Description : Reads the specified output data port bit.
|
280 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
281 |
|
|
* : - GPIO_Pin: specifies the port bit to read.
|
282 |
|
|
* This parameter can be GPIO_Pin_x where x can be (0..15).
|
283 |
|
|
* Output : None
|
284 |
|
|
* Return : The output port pin value.
|
285 |
|
|
*******************************************************************************/
|
286 |
|
|
u8 GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
|
287 |
|
|
{
|
288 |
|
|
u8 bitstatus = 0x00;
|
289 |
|
|
|
290 |
|
|
/* Check the parameters */
|
291 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
292 |
|
|
assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
|
293 |
|
|
|
294 |
|
|
if ((GPIOx->ODR & GPIO_Pin) != (u32)Bit_RESET)
|
295 |
|
|
{
|
296 |
|
|
bitstatus = (u8)Bit_SET;
|
297 |
|
|
}
|
298 |
|
|
else
|
299 |
|
|
{
|
300 |
|
|
bitstatus = (u8)Bit_RESET;
|
301 |
|
|
}
|
302 |
|
|
return bitstatus;
|
303 |
|
|
}
|
304 |
|
|
|
305 |
|
|
/*******************************************************************************
|
306 |
|
|
* Function Name : GPIO_ReadOutputData
|
307 |
|
|
* Description : Reads the specified GPIO output data port.
|
308 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
309 |
|
|
* Output : None
|
310 |
|
|
* Return : GPIO output data port value.
|
311 |
|
|
*******************************************************************************/
|
312 |
|
|
u16 GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
|
313 |
|
|
{
|
314 |
|
|
/* Check the parameters */
|
315 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
316 |
|
|
|
317 |
|
|
return ((u16)GPIOx->ODR);
|
318 |
|
|
}
|
319 |
|
|
|
320 |
|
|
/*******************************************************************************
|
321 |
|
|
* Function Name : GPIO_SetBits
|
322 |
|
|
* Description : Sets the selected data port bits.
|
323 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
324 |
|
|
* - GPIO_Pin: specifies the port bits to be written.
|
325 |
|
|
* This parameter can be any combination of GPIO_Pin_x where
|
326 |
|
|
* x can be (0..15).
|
327 |
|
|
* Output : None
|
328 |
|
|
* Return : None
|
329 |
|
|
*******************************************************************************/
|
330 |
|
|
void GPIO_SetBits(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
|
331 |
|
|
{
|
332 |
|
|
/* Check the parameters */
|
333 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
334 |
|
|
assert_param(IS_GPIO_PIN(GPIO_Pin));
|
335 |
|
|
|
336 |
|
|
GPIOx->BSRR = GPIO_Pin;
|
337 |
|
|
}
|
338 |
|
|
|
339 |
|
|
/*******************************************************************************
|
340 |
|
|
* Function Name : GPIO_ResetBits
|
341 |
|
|
* Description : Clears the selected data port bits.
|
342 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
343 |
|
|
* - GPIO_Pin: specifies the port bits to be written.
|
344 |
|
|
* This parameter can be any combination of GPIO_Pin_x where
|
345 |
|
|
* x can be (0..15).
|
346 |
|
|
* Output : None
|
347 |
|
|
* Return : None
|
348 |
|
|
*******************************************************************************/
|
349 |
|
|
void GPIO_ResetBits(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
|
350 |
|
|
{
|
351 |
|
|
/* Check the parameters */
|
352 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
353 |
|
|
assert_param(IS_GPIO_PIN(GPIO_Pin));
|
354 |
|
|
|
355 |
|
|
GPIOx->BRR = GPIO_Pin;
|
356 |
|
|
}
|
357 |
|
|
|
358 |
|
|
/*******************************************************************************
|
359 |
|
|
* Function Name : GPIO_WriteBit
|
360 |
|
|
* Description : Sets or clears the selected data port bit.
|
361 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
362 |
|
|
* - GPIO_Pin: specifies the port bit to be written.
|
363 |
|
|
* This parameter can be one of GPIO_Pin_x where x can be (0..15).
|
364 |
|
|
* - BitVal: specifies the value to be written to the selected bit.
|
365 |
|
|
* This parameter can be one of the BitAction enum values:
|
366 |
|
|
* - Bit_RESET: to clear the port pin
|
367 |
|
|
* - Bit_SET: to set the port pin
|
368 |
|
|
* Output : None
|
369 |
|
|
* Return : None
|
370 |
|
|
*******************************************************************************/
|
371 |
|
|
void GPIO_WriteBit(GPIO_TypeDef* GPIOx, u16 GPIO_Pin, BitAction BitVal)
|
372 |
|
|
{
|
373 |
|
|
/* Check the parameters */
|
374 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
375 |
|
|
assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
|
376 |
|
|
assert_param(IS_GPIO_BIT_ACTION(BitVal));
|
377 |
|
|
|
378 |
|
|
if (BitVal != Bit_RESET)
|
379 |
|
|
{
|
380 |
|
|
GPIOx->BSRR = GPIO_Pin;
|
381 |
|
|
}
|
382 |
|
|
else
|
383 |
|
|
{
|
384 |
|
|
GPIOx->BRR = GPIO_Pin;
|
385 |
|
|
}
|
386 |
|
|
}
|
387 |
|
|
|
388 |
|
|
/*******************************************************************************
|
389 |
|
|
* Function Name : GPIO_Write
|
390 |
|
|
* Description : Writes data to the specified GPIO data port.
|
391 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
392 |
|
|
* - PortVal: specifies the value to be written to the port output
|
393 |
|
|
* data register.
|
394 |
|
|
* Output : None
|
395 |
|
|
* Return : None
|
396 |
|
|
*******************************************************************************/
|
397 |
|
|
void GPIO_Write(GPIO_TypeDef* GPIOx, u16 PortVal)
|
398 |
|
|
{
|
399 |
|
|
/* Check the parameters */
|
400 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
401 |
|
|
|
402 |
|
|
GPIOx->ODR = PortVal;
|
403 |
|
|
}
|
404 |
|
|
|
405 |
|
|
/*******************************************************************************
|
406 |
|
|
* Function Name : GPIO_PinLockConfig
|
407 |
|
|
* Description : Locks GPIO Pins configuration registers.
|
408 |
|
|
* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral.
|
409 |
|
|
* - GPIO_Pin: specifies the port bit to be written.
|
410 |
|
|
* This parameter can be any combination of GPIO_Pin_x where
|
411 |
|
|
* x can be (0..15).
|
412 |
|
|
* Output : None
|
413 |
|
|
* Return : None
|
414 |
|
|
*******************************************************************************/
|
415 |
|
|
void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
|
416 |
|
|
{
|
417 |
|
|
u32 tmp = 0x00010000;
|
418 |
|
|
|
419 |
|
|
/* Check the parameters */
|
420 |
|
|
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
421 |
|
|
assert_param(IS_GPIO_PIN(GPIO_Pin));
|
422 |
|
|
|
423 |
|
|
tmp |= GPIO_Pin;
|
424 |
|
|
/* Set LCKK bit */
|
425 |
|
|
GPIOx->LCKR = tmp;
|
426 |
|
|
/* Reset LCKK bit */
|
427 |
|
|
GPIOx->LCKR = GPIO_Pin;
|
428 |
|
|
/* Set LCKK bit */
|
429 |
|
|
GPIOx->LCKR = tmp;
|
430 |
|
|
/* Read LCKK bit*/
|
431 |
|
|
tmp = GPIOx->LCKR;
|
432 |
|
|
/* Read LCKK bit*/
|
433 |
|
|
tmp = GPIOx->LCKR;
|
434 |
|
|
}
|
435 |
|
|
|
436 |
|
|
/*******************************************************************************
|
437 |
|
|
* Function Name : GPIO_EventOutputConfig
|
438 |
|
|
* Description : Selects the GPIO pin used as Event output.
|
439 |
|
|
* Input : - GPIO_PortSource: selects the GPIO port to be used as source
|
440 |
|
|
* for Event output.
|
441 |
|
|
* This parameter can be GPIO_PortSourceGPIOx where x can be
|
442 |
|
|
* (A..E).
|
443 |
|
|
* - GPIO_PinSource: specifies the pin for the Event output.
|
444 |
|
|
* This parameter can be GPIO_PinSourcex where x can be (0..15).
|
445 |
|
|
* Output : None
|
446 |
|
|
* Return : None
|
447 |
|
|
*******************************************************************************/
|
448 |
|
|
void GPIO_EventOutputConfig(u8 GPIO_PortSource, u8 GPIO_PinSource)
|
449 |
|
|
{
|
450 |
|
|
u32 tmpreg = 0x00;
|
451 |
|
|
|
452 |
|
|
/* Check the parameters */
|
453 |
|
|
assert_param(IS_GPIO_EVENTOUT_PORT_SOURCE(GPIO_PortSource));
|
454 |
|
|
assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
|
455 |
|
|
|
456 |
|
|
tmpreg = AFIO->EVCR;
|
457 |
|
|
/* Clear the PORT[6:4] and PIN[3:0] bits */
|
458 |
|
|
tmpreg &= EVCR_PORTPINCONFIG_MASK;
|
459 |
|
|
tmpreg |= (u32)GPIO_PortSource << 0x04;
|
460 |
|
|
tmpreg |= GPIO_PinSource;
|
461 |
|
|
|
462 |
|
|
AFIO->EVCR = tmpreg;
|
463 |
|
|
}
|
464 |
|
|
|
465 |
|
|
/*******************************************************************************
|
466 |
|
|
* Function Name : GPIO_EventOutputCmd
|
467 |
|
|
* Description : Enables or disables the Event Output.
|
468 |
|
|
* Input : - NewState: new state of the Event output.
|
469 |
|
|
* This parameter can be: ENABLE or DISABLE.
|
470 |
|
|
* Output : None
|
471 |
|
|
* Return : None
|
472 |
|
|
*******************************************************************************/
|
473 |
|
|
void GPIO_EventOutputCmd(FunctionalState NewState)
|
474 |
|
|
{
|
475 |
|
|
/* Check the parameters */
|
476 |
|
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
477 |
|
|
|
478 |
|
|
*(vu32 *) EVCR_EVOE_BB = (u32)NewState;
|
479 |
|
|
}
|
480 |
|
|
|
481 |
|
|
/*******************************************************************************
|
482 |
|
|
* Function Name : GPIO_PinRemapConfig
|
483 |
|
|
* Description : Changes the mapping of the specified pin.
|
484 |
|
|
* Input : - GPIO_Remap: selects the pin to remap.
|
485 |
|
|
* This parameter can be one of the following values:
|
486 |
|
|
* - GPIO_Remap_SPI1
|
487 |
|
|
* - GPIO_Remap_I2C1
|
488 |
|
|
* - GPIO_Remap_USART1
|
489 |
|
|
* - GPIO_Remap_USART2
|
490 |
|
|
* - GPIO_PartialRemap_USART3
|
491 |
|
|
* - GPIO_FullRemap_USART3
|
492 |
|
|
* - GPIO_PartialRemap_TIM1
|
493 |
|
|
* - GPIO_FullRemap_TIM1
|
494 |
|
|
* - GPIO_PartialRemap1_TIM2
|
495 |
|
|
* - GPIO_PartialRemap2_TIM2
|
496 |
|
|
* - GPIO_FullRemap_TIM2
|
497 |
|
|
* - GPIO_PartialRemap_TIM3
|
498 |
|
|
* - GPIO_FullRemap_TIM3
|
499 |
|
|
* - GPIO_Remap_TIM4
|
500 |
|
|
* - GPIO_Remap1_CAN
|
501 |
|
|
* - GPIO_Remap2_CAN
|
502 |
|
|
* - GPIO_Remap_PD01
|
503 |
|
|
* - GPIO_Remap_TIM5CH4_LSI
|
504 |
|
|
* - GPIO_Remap_ADC1_ETRGINJ
|
505 |
|
|
* - GPIO_Remap_ADC1_ETRGREG
|
506 |
|
|
* - GPIO_Remap_ADC2_ETRGINJ
|
507 |
|
|
* - GPIO_Remap_ADC2_ETRGREG
|
508 |
|
|
* - GPIO_Remap_SWJ_NoJTRST
|
509 |
|
|
* - GPIO_Remap_SWJ_JTAGDisable
|
510 |
|
|
* - GPIO_Remap_SWJ_Disable
|
511 |
|
|
* - NewState: new state of the port pin remapping.
|
512 |
|
|
* This parameter can be: ENABLE or DISABLE.
|
513 |
|
|
* Output : None
|
514 |
|
|
* Return : None
|
515 |
|
|
*******************************************************************************/
|
516 |
|
|
void GPIO_PinRemapConfig(u32 GPIO_Remap, FunctionalState NewState)
|
517 |
|
|
{
|
518 |
|
|
u32 tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00;
|
519 |
|
|
|
520 |
|
|
/* Check the parameters */
|
521 |
|
|
assert_param(IS_GPIO_REMAP(GPIO_Remap));
|
522 |
|
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
523 |
|
|
|
524 |
|
|
tmpreg = AFIO->MAPR;
|
525 |
|
|
|
526 |
|
|
tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10;
|
527 |
|
|
tmp = GPIO_Remap & LSB_MASK;
|
528 |
|
|
|
529 |
|
|
if ((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK))
|
530 |
|
|
{
|
531 |
|
|
tmpreg &= DBGAFR_SWJCFG_MASK;
|
532 |
|
|
AFIO->MAPR &= DBGAFR_SWJCFG_MASK;
|
533 |
|
|
}
|
534 |
|
|
else if ((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK)
|
535 |
|
|
{
|
536 |
|
|
tmp1 = ((u32)0x03) << tmpmask;
|
537 |
|
|
tmpreg &= ~tmp1;
|
538 |
|
|
tmpreg |= ~DBGAFR_SWJCFG_MASK;
|
539 |
|
|
}
|
540 |
|
|
else
|
541 |
|
|
{
|
542 |
|
|
tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15)*0x10));
|
543 |
|
|
tmpreg |= ~DBGAFR_SWJCFG_MASK;
|
544 |
|
|
}
|
545 |
|
|
|
546 |
|
|
if (NewState != DISABLE)
|
547 |
|
|
{
|
548 |
|
|
tmpreg |= (tmp << ((GPIO_Remap >> 0x15)*0x10));
|
549 |
|
|
}
|
550 |
|
|
|
551 |
|
|
AFIO->MAPR = tmpreg;
|
552 |
|
|
}
|
553 |
|
|
|
554 |
|
|
/*******************************************************************************
|
555 |
|
|
* Function Name : GPIO_EXTILineConfig
|
556 |
|
|
* Description : Selects the GPIO pin used as EXTI Line.
|
557 |
|
|
* Input : - GPIO_PortSource: selects the GPIO port to be used as
|
558 |
|
|
* source for EXTI lines.
|
559 |
|
|
* This parameter can be GPIO_PortSourceGPIOx where x can be
|
560 |
|
|
* (A..G).
|
561 |
|
|
* - GPIO_PinSource: specifies the EXTI line to be configured.
|
562 |
|
|
* This parameter can be GPIO_PinSourcex where x can be (0..15).
|
563 |
|
|
* Output : None
|
564 |
|
|
* Return : None
|
565 |
|
|
*******************************************************************************/
|
566 |
|
|
void GPIO_EXTILineConfig(u8 GPIO_PortSource, u8 GPIO_PinSource)
|
567 |
|
|
{
|
568 |
|
|
u32 tmp = 0x00;
|
569 |
|
|
|
570 |
|
|
/* Check the parameters */
|
571 |
|
|
assert_param(IS_GPIO_EXTI_PORT_SOURCE(GPIO_PortSource));
|
572 |
|
|
assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
|
573 |
|
|
|
574 |
|
|
tmp = ((u32)0x0F) << (0x04 * (GPIO_PinSource & (u8)0x03));
|
575 |
|
|
|
576 |
|
|
AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;
|
577 |
|
|
AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((u32)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (u8)0x03)));
|
578 |
|
|
}
|
579 |
|
|
|
580 |
|
|
/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
|