1 /**
2 ******************************************************************************
3 * @file stm32g0xx_ll_gpio.c
4 * @author MCD Application Team
5 * @brief GPIO LL module driver.
6 ******************************************************************************
7 * @attention
8 *
9 * Copyright (c) 2018 STMicroelectronics.
10 * All rights reserved.
11 *
12 * This software is licensed under terms that can be found in the LICENSE file
13 * in the root directory of this software component.
14 * If no LICENSE file comes with this software, it is provided AS-IS.
15 *
16 ******************************************************************************
17 */
18 #if defined(USE_FULL_LL_DRIVER)
19
20 /* Includes ------------------------------------------------------------------*/
21 #include "stm32g0xx_ll_gpio.h"
22 #include "stm32g0xx_ll_bus.h"
23 #ifdef USE_FULL_ASSERT
24 #include "stm32_assert.h"
25 #else
26 #define assert_param(expr) ((void)0U)
27 #endif /* USE_FULL_ASSERT */
28
29 /** @addtogroup STM32G0xx_LL_Driver
30 * @{
31 */
32
33 #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF)
34
35 /** @addtogroup GPIO_LL
36 * @{
37 */
38 /** MISRA C:2012 deviation rule has been granted for following rules:
39 * Rule-12.2 - Medium: RHS argument is in interval [0,INF] which is out of
40 * range of the shift operator in following API :
41 * LL_GPIO_Init
42 */
43
44 /* Private types -------------------------------------------------------------*/
45 /* Private variables ---------------------------------------------------------*/
46 /* Private constants ---------------------------------------------------------*/
47 /* Private macros ------------------------------------------------------------*/
48 /** @addtogroup GPIO_LL_Private_Macros
49 * @{
50 */
51 #define IS_LL_GPIO_PIN(__VALUE__) (((0x00u) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL)))
52
53 #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\
54 ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\
55 ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\
56 ((__VALUE__) == LL_GPIO_MODE_ANALOG))
57
58 #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\
59 ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
60
61 #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\
62 ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\
63 ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH) ||\
64 ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH))
65
66 #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\
67 ((__VALUE__) == LL_GPIO_PULL_UP) ||\
68 ((__VALUE__) == LL_GPIO_PULL_DOWN))
69
70 #if defined(GPIOE)
71 #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\
72 ((__VALUE__) == LL_GPIO_AF_1 ) ||\
73 ((__VALUE__) == LL_GPIO_AF_2 ) ||\
74 ((__VALUE__) == LL_GPIO_AF_3 ) ||\
75 ((__VALUE__) == LL_GPIO_AF_4 ) ||\
76 ((__VALUE__) == LL_GPIO_AF_5 ) ||\
77 ((__VALUE__) == LL_GPIO_AF_6 ) ||\
78 ((__VALUE__) == LL_GPIO_AF_7 ) ||\
79 ((__VALUE__) == LL_GPIO_AF_8 ) ||\
80 ((__VALUE__) == LL_GPIO_AF_9 ) ||\
81 ((__VALUE__) == LL_GPIO_AF_10 ))
82 #else
83 #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\
84 ((__VALUE__) == LL_GPIO_AF_1 ) ||\
85 ((__VALUE__) == LL_GPIO_AF_2 ) ||\
86 ((__VALUE__) == LL_GPIO_AF_3 ) ||\
87 ((__VALUE__) == LL_GPIO_AF_4 ) ||\
88 ((__VALUE__) == LL_GPIO_AF_5 ) ||\
89 ((__VALUE__) == LL_GPIO_AF_6 ) ||\
90 ((__VALUE__) == LL_GPIO_AF_7 ))
91 #endif /* GPIOE */
92 /**
93 * @}
94 */
95
96 /* Private function prototypes -----------------------------------------------*/
97
98 /* Exported functions --------------------------------------------------------*/
99 /** @addtogroup GPIO_LL_Exported_Functions
100 * @{
101 */
102
103 /** @addtogroup GPIO_LL_EF_Init
104 * @{
105 */
106
107 /**
108 * @brief De-initialize GPIO registers (Registers restored to their default values).
109 * @param GPIOx GPIO Port
110 * @retval An ErrorStatus enumeration value:
111 * - SUCCESS: GPIO registers are de-initialized
112 * - ERROR: Wrong GPIO Port
113 */
LL_GPIO_DeInit(GPIO_TypeDef * GPIOx)114 ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
115 {
116 ErrorStatus status = SUCCESS;
117
118 /* Check the parameters */
119 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
120
121 /* Force and Release reset on clock of GPIOx Port */
122 if (GPIOx == GPIOA)
123 {
124 LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOA);
125 LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOA);
126 }
127 else if (GPIOx == GPIOB)
128 {
129 LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOB);
130 LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOB);
131 }
132 else if (GPIOx == GPIOC)
133 {
134 LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOC);
135 LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOC);
136 }
137 #if defined(GPIOD)
138 else if (GPIOx == GPIOD)
139 {
140 LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOD);
141 LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOD);
142 }
143 #endif /* GPIOD */
144 #if defined(GPIOE)
145 else if (GPIOx == GPIOE)
146 {
147 LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOE);
148 LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOE);
149 }
150 #endif /* GPIOE */
151 #if defined(GPIOF)
152 else if (GPIOx == GPIOF)
153 {
154 LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOF);
155 LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOF);
156 }
157 #endif /* GPIOF */
158 else
159 {
160 status = ERROR;
161 }
162
163 return (status);
164 }
165
166 /**
167 * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
168 * @param GPIOx GPIO Port
169 * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
170 * that contains the configuration information for the specified GPIO peripheral.
171 * @retval An ErrorStatus enumeration value:
172 * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
173 * - ERROR: Not applicable
174 */
LL_GPIO_Init(GPIO_TypeDef * GPIOx,LL_GPIO_InitTypeDef * GPIO_InitStruct)175 ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct)
176 {
177 uint32_t pinpos;
178 uint32_t currentpin;
179
180 /* Check the parameters */
181 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
182 assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
183 assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
184 assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
185
186 /* ------------------------- Configure the port pins ---------------- */
187 /* Initialize pinpos on first pin set */
188 pinpos = 0;
189
190 /* Configure the port pins */
191 while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00u)
192 {
193 /* Get current io position */
194 currentpin = (GPIO_InitStruct->Pin) & (0x00000001uL << pinpos);
195
196 if (currentpin != 0x00u)
197 {
198 if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
199 {
200 /* Check Speed mode parameters */
201 assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
202
203 /* Speed mode configuration */
204 LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
205
206 /* Check Output mode parameters */
207 assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
208
209 /* Output mode configuration*/
210 LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType);
211 }
212
213 /* Pull-up Pull down resistor configuration*/
214 LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
215
216 if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)
217 {
218 /* Check Alternate parameter */
219 assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate));
220
221 /* Speed mode configuration */
222 if (currentpin < LL_GPIO_PIN_8)
223 {
224 LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate);
225 }
226 else
227 {
228 LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate);
229 }
230 }
231
232 /* Pin Mode configuration */
233 LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
234 }
235 pinpos++;
236 }
237
238 return (SUCCESS);
239 }
240
241 /**
242 * @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
243 * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
244 * whose fields will be set to default values.
245 * @retval None
246 */
247
LL_GPIO_StructInit(LL_GPIO_InitTypeDef * GPIO_InitStruct)248 void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
249 {
250 /* Reset GPIO init structure parameters values */
251 GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL;
252 GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG;
253 GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW;
254 GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL;
255 GPIO_InitStruct->Pull = LL_GPIO_PULL_NO;
256 GPIO_InitStruct->Alternate = LL_GPIO_AF_0;
257 }
258
259 /**
260 * @}
261 */
262
263 /**
264 * @}
265 */
266
267 /**
268 * @}
269 */
270
271 #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) */
272
273 /**
274 * @}
275 */
276
277 #endif /* USE_FULL_LL_DRIVER */
278
279