2 ******************************************************************************
\r
3 * @file stm32f10x_dma.c
\r
4 * @author MCD Application Team
\r
7 * @brief This file provides all the DMA firmware functions.
\r
8 ******************************************************************************
\r
11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
\r
12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
\r
13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
\r
14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
\r
15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
\r
16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
\r
18 * <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2>
\r
21 /* Includes ------------------------------------------------------------------*/
\r
22 #include "stm32f10x_dma.h"
\r
23 #include "stm32f10x_rcc.h"
\r
25 /** @addtogroup STM32F10x_StdPeriph_Driver
\r
30 * @brief DMA driver modules
\r
34 /** @defgroup DMA_Private_TypesDefinitions
\r
41 /** @defgroup DMA_Private_Defines
\r
46 /* DMA1 Channelx interrupt pending bit masks */
\r
47 #define DMA1_Channel1_IT_Mask ((uint32_t)(DMA_ISR_GIF1 | DMA_ISR_TCIF1 | DMA_ISR_HTIF1 | DMA_ISR_TEIF1))
\r
48 #define DMA1_Channel2_IT_Mask ((uint32_t)(DMA_ISR_GIF2 | DMA_ISR_TCIF2 | DMA_ISR_HTIF2 | DMA_ISR_TEIF2))
\r
49 #define DMA1_Channel3_IT_Mask ((uint32_t)(DMA_ISR_GIF3 | DMA_ISR_TCIF3 | DMA_ISR_HTIF3 | DMA_ISR_TEIF3))
\r
50 #define DMA1_Channel4_IT_Mask ((uint32_t)(DMA_ISR_GIF4 | DMA_ISR_TCIF4 | DMA_ISR_HTIF4 | DMA_ISR_TEIF4))
\r
51 #define DMA1_Channel5_IT_Mask ((uint32_t)(DMA_ISR_GIF5 | DMA_ISR_TCIF5 | DMA_ISR_HTIF5 | DMA_ISR_TEIF5))
\r
52 #define DMA1_Channel6_IT_Mask ((uint32_t)(DMA_ISR_GIF6 | DMA_ISR_TCIF6 | DMA_ISR_HTIF6 | DMA_ISR_TEIF6))
\r
53 #define DMA1_Channel7_IT_Mask ((uint32_t)(DMA_ISR_GIF7 | DMA_ISR_TCIF7 | DMA_ISR_HTIF7 | DMA_ISR_TEIF7))
\r
55 /* DMA2 Channelx interrupt pending bit masks */
\r
56 #define DMA2_Channel1_IT_Mask ((uint32_t)(DMA_ISR_GIF1 | DMA_ISR_TCIF1 | DMA_ISR_HTIF1 | DMA_ISR_TEIF1))
\r
57 #define DMA2_Channel2_IT_Mask ((uint32_t)(DMA_ISR_GIF2 | DMA_ISR_TCIF2 | DMA_ISR_HTIF2 | DMA_ISR_TEIF2))
\r
58 #define DMA2_Channel3_IT_Mask ((uint32_t)(DMA_ISR_GIF3 | DMA_ISR_TCIF3 | DMA_ISR_HTIF3 | DMA_ISR_TEIF3))
\r
59 #define DMA2_Channel4_IT_Mask ((uint32_t)(DMA_ISR_GIF4 | DMA_ISR_TCIF4 | DMA_ISR_HTIF4 | DMA_ISR_TEIF4))
\r
60 #define DMA2_Channel5_IT_Mask ((uint32_t)(DMA_ISR_GIF5 | DMA_ISR_TCIF5 | DMA_ISR_HTIF5 | DMA_ISR_TEIF5))
\r
62 /* DMA2 FLAG mask */
\r
63 #define FLAG_Mask ((uint32_t)0x10000000)
\r
65 /* DMA registers Masks */
\r
66 #define CCR_CLEAR_Mask ((uint32_t)0xFFFF800F)
\r
72 /** @defgroup DMA_Private_Macros
\r
80 /** @defgroup DMA_Private_Variables
\r
88 /** @defgroup DMA_Private_FunctionPrototypes
\r
96 /** @defgroup DMA_Private_Functions
\r
101 * @brief Deinitializes the DMAy Channelx registers to their default reset
\r
103 * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and
\r
104 * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
\r
107 void DMA_DeInit(DMA_Channel_TypeDef* DMAy_Channelx)
\r
109 /* Check the parameters */
\r
110 assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
\r
112 /* Disable the selected DMAy Channelx */
\r
113 DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR1_EN);
\r
115 /* Reset DMAy Channelx control register */
\r
116 DMAy_Channelx->CCR = 0;
\r
118 /* Reset DMAy Channelx remaining bytes register */
\r
119 DMAy_Channelx->CNDTR = 0;
\r
121 /* Reset DMAy Channelx peripheral address register */
\r
122 DMAy_Channelx->CPAR = 0;
\r
124 /* Reset DMAy Channelx memory address register */
\r
125 DMAy_Channelx->CMAR = 0;
\r
127 if (DMAy_Channelx == DMA1_Channel1)
\r
129 /* Reset interrupt pending bits for DMA1 Channel1 */
\r
130 DMA1->IFCR |= DMA1_Channel1_IT_Mask;
\r
132 else if (DMAy_Channelx == DMA1_Channel2)
\r
134 /* Reset interrupt pending bits for DMA1 Channel2 */
\r
135 DMA1->IFCR |= DMA1_Channel2_IT_Mask;
\r
137 else if (DMAy_Channelx == DMA1_Channel3)
\r
139 /* Reset interrupt pending bits for DMA1 Channel3 */
\r
140 DMA1->IFCR |= DMA1_Channel3_IT_Mask;
\r
142 else if (DMAy_Channelx == DMA1_Channel4)
\r
144 /* Reset interrupt pending bits for DMA1 Channel4 */
\r
145 DMA1->IFCR |= DMA1_Channel4_IT_Mask;
\r
147 else if (DMAy_Channelx == DMA1_Channel5)
\r
149 /* Reset interrupt pending bits for DMA1 Channel5 */
\r
150 DMA1->IFCR |= DMA1_Channel5_IT_Mask;
\r
152 else if (DMAy_Channelx == DMA1_Channel6)
\r
154 /* Reset interrupt pending bits for DMA1 Channel6 */
\r
155 DMA1->IFCR |= DMA1_Channel6_IT_Mask;
\r
157 else if (DMAy_Channelx == DMA1_Channel7)
\r
159 /* Reset interrupt pending bits for DMA1 Channel7 */
\r
160 DMA1->IFCR |= DMA1_Channel7_IT_Mask;
\r
162 else if (DMAy_Channelx == DMA2_Channel1)
\r
164 /* Reset interrupt pending bits for DMA2 Channel1 */
\r
165 DMA2->IFCR |= DMA2_Channel1_IT_Mask;
\r
167 else if (DMAy_Channelx == DMA2_Channel2)
\r
169 /* Reset interrupt pending bits for DMA2 Channel2 */
\r
170 DMA2->IFCR |= DMA2_Channel2_IT_Mask;
\r
172 else if (DMAy_Channelx == DMA2_Channel3)
\r
174 /* Reset interrupt pending bits for DMA2 Channel3 */
\r
175 DMA2->IFCR |= DMA2_Channel3_IT_Mask;
\r
177 else if (DMAy_Channelx == DMA2_Channel4)
\r
179 /* Reset interrupt pending bits for DMA2 Channel4 */
\r
180 DMA2->IFCR |= DMA2_Channel4_IT_Mask;
\r
184 if (DMAy_Channelx == DMA2_Channel5)
\r
186 /* Reset interrupt pending bits for DMA2 Channel5 */
\r
187 DMA2->IFCR |= DMA2_Channel5_IT_Mask;
\r
193 * @brief Initializes the DMAy Channelx according to the specified
\r
194 * parameters in the DMA_InitStruct.
\r
195 * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and
\r
196 * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
\r
197 * @param DMA_InitStruct: pointer to a DMA_InitTypeDef structure that
\r
198 * contains the configuration information for the specified DMA Channel.
\r
201 void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, DMA_InitTypeDef* DMA_InitStruct)
\r
203 uint32_t tmpreg = 0;
\r
205 /* Check the parameters */
\r
206 assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
\r
207 assert_param(IS_DMA_DIR(DMA_InitStruct->DMA_DIR));
\r
208 assert_param(IS_DMA_BUFFER_SIZE(DMA_InitStruct->DMA_BufferSize));
\r
209 assert_param(IS_DMA_PERIPHERAL_INC_STATE(DMA_InitStruct->DMA_PeripheralInc));
\r
210 assert_param(IS_DMA_MEMORY_INC_STATE(DMA_InitStruct->DMA_MemoryInc));
\r
211 assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(DMA_InitStruct->DMA_PeripheralDataSize));
\r
212 assert_param(IS_DMA_MEMORY_DATA_SIZE(DMA_InitStruct->DMA_MemoryDataSize));
\r
213 assert_param(IS_DMA_MODE(DMA_InitStruct->DMA_Mode));
\r
214 assert_param(IS_DMA_PRIORITY(DMA_InitStruct->DMA_Priority));
\r
215 assert_param(IS_DMA_M2M_STATE(DMA_InitStruct->DMA_M2M));
\r
217 /*--------------------------- DMAy Channelx CCR Configuration -----------------*/
\r
218 /* Get the DMAy_Channelx CCR value */
\r
219 tmpreg = DMAy_Channelx->CCR;
\r
220 /* Clear MEM2MEM, PL, MSIZE, PSIZE, MINC, PINC, CIRC and DIR bits */
\r
221 tmpreg &= CCR_CLEAR_Mask;
\r
222 /* Configure DMAy Channelx: data transfer, data size, priority level and mode */
\r
223 /* Set DIR bit according to DMA_DIR value */
\r
224 /* Set CIRC bit according to DMA_Mode value */
\r
225 /* Set PINC bit according to DMA_PeripheralInc value */
\r
226 /* Set MINC bit according to DMA_MemoryInc value */
\r
227 /* Set PSIZE bits according to DMA_PeripheralDataSize value */
\r
228 /* Set MSIZE bits according to DMA_MemoryDataSize value */
\r
229 /* Set PL bits according to DMA_Priority value */
\r
230 /* Set the MEM2MEM bit according to DMA_M2M value */
\r
231 tmpreg |= DMA_InitStruct->DMA_DIR | DMA_InitStruct->DMA_Mode |
\r
232 DMA_InitStruct->DMA_PeripheralInc | DMA_InitStruct->DMA_MemoryInc |
\r
233 DMA_InitStruct->DMA_PeripheralDataSize | DMA_InitStruct->DMA_MemoryDataSize |
\r
234 DMA_InitStruct->DMA_Priority | DMA_InitStruct->DMA_M2M;
\r
236 /* Write to DMAy Channelx CCR */
\r
237 DMAy_Channelx->CCR = tmpreg;
\r
239 /*--------------------------- DMAy Channelx CNDTR Configuration ---------------*/
\r
240 /* Write to DMAy Channelx CNDTR */
\r
241 DMAy_Channelx->CNDTR = DMA_InitStruct->DMA_BufferSize;
\r
243 /*--------------------------- DMAy Channelx CPAR Configuration ----------------*/
\r
244 /* Write to DMAy Channelx CPAR */
\r
245 DMAy_Channelx->CPAR = DMA_InitStruct->DMA_PeripheralBaseAddr;
\r
247 /*--------------------------- DMAy Channelx CMAR Configuration ----------------*/
\r
248 /* Write to DMAy Channelx CMAR */
\r
249 DMAy_Channelx->CMAR = DMA_InitStruct->DMA_MemoryBaseAddr;
\r
253 * @brief Fills each DMA_InitStruct member with its default value.
\r
254 * @param DMA_InitStruct : pointer to a DMA_InitTypeDef structure which will
\r
258 void DMA_StructInit(DMA_InitTypeDef* DMA_InitStruct)
\r
260 /*-------------- Reset DMA init structure parameters values ------------------*/
\r
261 /* Initialize the DMA_PeripheralBaseAddr member */
\r
262 DMA_InitStruct->DMA_PeripheralBaseAddr = 0;
\r
263 /* Initialize the DMA_MemoryBaseAddr member */
\r
264 DMA_InitStruct->DMA_MemoryBaseAddr = 0;
\r
265 /* Initialize the DMA_DIR member */
\r
266 DMA_InitStruct->DMA_DIR = DMA_DIR_PeripheralSRC;
\r
267 /* Initialize the DMA_BufferSize member */
\r
268 DMA_InitStruct->DMA_BufferSize = 0;
\r
269 /* Initialize the DMA_PeripheralInc member */
\r
270 DMA_InitStruct->DMA_PeripheralInc = DMA_PeripheralInc_Disable;
\r
271 /* Initialize the DMA_MemoryInc member */
\r
272 DMA_InitStruct->DMA_MemoryInc = DMA_MemoryInc_Disable;
\r
273 /* Initialize the DMA_PeripheralDataSize member */
\r
274 DMA_InitStruct->DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
\r
275 /* Initialize the DMA_MemoryDataSize member */
\r
276 DMA_InitStruct->DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
\r
277 /* Initialize the DMA_Mode member */
\r
278 DMA_InitStruct->DMA_Mode = DMA_Mode_Normal;
\r
279 /* Initialize the DMA_Priority member */
\r
280 DMA_InitStruct->DMA_Priority = DMA_Priority_Low;
\r
281 /* Initialize the DMA_M2M member */
\r
282 DMA_InitStruct->DMA_M2M = DMA_M2M_Disable;
\r
286 * @brief Enables or disables the specified DMAy Channelx.
\r
287 * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and
\r
288 * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
\r
289 * @param NewState: new state of the DMAy Channelx.
\r
290 * This parameter can be: ENABLE or DISABLE.
\r
293 void DMA_Cmd(DMA_Channel_TypeDef* DMAy_Channelx, FunctionalState NewState)
\r
295 /* Check the parameters */
\r
296 assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
\r
297 assert_param(IS_FUNCTIONAL_STATE(NewState));
\r
299 if (NewState != DISABLE)
\r
301 /* Enable the selected DMAy Channelx */
\r
302 DMAy_Channelx->CCR |= DMA_CCR1_EN;
\r
306 /* Disable the selected DMAy Channelx */
\r
307 DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR1_EN);
\r
312 * @brief Enables or disables the specified DMAy Channelx interrupts.
\r
313 * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and
\r
314 * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
\r
315 * @param DMA_IT: specifies the DMA interrupts sources to be enabled
\r
317 * This parameter can be any combination of the following values:
\r
318 * @arg DMA_IT_TC: Transfer complete interrupt mask
\r
319 * @arg DMA_IT_HT: Half transfer interrupt mask
\r
320 * @arg DMA_IT_TE: Transfer error interrupt mask
\r
321 * @param NewState: new state of the specified DMA interrupts.
\r
322 * This parameter can be: ENABLE or DISABLE.
\r
325 void DMA_ITConfig(DMA_Channel_TypeDef* DMAy_Channelx, uint32_t DMA_IT, FunctionalState NewState)
\r
327 /* Check the parameters */
\r
328 assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
\r
329 assert_param(IS_DMA_CONFIG_IT(DMA_IT));
\r
330 assert_param(IS_FUNCTIONAL_STATE(NewState));
\r
331 if (NewState != DISABLE)
\r
333 /* Enable the selected DMA interrupts */
\r
334 DMAy_Channelx->CCR |= DMA_IT;
\r
338 /* Disable the selected DMA interrupts */
\r
339 DMAy_Channelx->CCR &= ~DMA_IT;
\r
344 * @brief Sets the number of data units in the current DMAy Channelx transfer.
\r
345 * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and
\r
346 * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
\r
347 * @param DataNumber: The number of data units in the current DMAy Channelx
\r
349 * @note This function can only be used when the DMAy_Channelx is disabled.
\r
352 void DMA_SetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx, uint16_t DataNumber)
\r
354 /* Check the parameters */
\r
355 assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
\r
357 /*--------------------------- DMAy Channelx CNDTR Configuration ---------------*/
\r
358 /* Write to DMAy Channelx CNDTR */
\r
359 DMAy_Channelx->CNDTR = DataNumber;
\r
363 * @brief Returns the number of remaining data units in the current
\r
364 * DMAy Channelx transfer.
\r
365 * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and
\r
366 * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
\r
367 * @retval The number of remaining data units in the current DMAy Channelx
\r
370 uint16_t DMA_GetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx)
\r
372 /* Check the parameters */
\r
373 assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
\r
374 /* Return the number of remaining data units for DMAy Channelx */
\r
375 return ((uint16_t)(DMAy_Channelx->CNDTR));
\r
379 * @brief Checks whether the specified DMAy Channelx flag is set or not.
\r
380 * @param DMA_FLAG: specifies the flag to check.
\r
381 * This parameter can be one of the following values:
\r
382 * @arg DMA1_FLAG_GL1: DMA1 Channel1 global flag.
\r
383 * @arg DMA1_FLAG_TC1: DMA1 Channel1 transfer complete flag.
\r
384 * @arg DMA1_FLAG_HT1: DMA1 Channel1 half transfer flag.
\r
385 * @arg DMA1_FLAG_TE1: DMA1 Channel1 transfer error flag.
\r
386 * @arg DMA1_FLAG_GL2: DMA1 Channel2 global flag.
\r
387 * @arg DMA1_FLAG_TC2: DMA1 Channel2 transfer complete flag.
\r
388 * @arg DMA1_FLAG_HT2: DMA1 Channel2 half transfer flag.
\r
389 * @arg DMA1_FLAG_TE2: DMA1 Channel2 transfer error flag.
\r
390 * @arg DMA1_FLAG_GL3: DMA1 Channel3 global flag.
\r
391 * @arg DMA1_FLAG_TC3: DMA1 Channel3 transfer complete flag.
\r
392 * @arg DMA1_FLAG_HT3: DMA1 Channel3 half transfer flag.
\r
393 * @arg DMA1_FLAG_TE3: DMA1 Channel3 transfer error flag.
\r
394 * @arg DMA1_FLAG_GL4: DMA1 Channel4 global flag.
\r
395 * @arg DMA1_FLAG_TC4: DMA1 Channel4 transfer complete flag.
\r
396 * @arg DMA1_FLAG_HT4: DMA1 Channel4 half transfer flag.
\r
397 * @arg DMA1_FLAG_TE4: DMA1 Channel4 transfer error flag.
\r
398 * @arg DMA1_FLAG_GL5: DMA1 Channel5 global flag.
\r
399 * @arg DMA1_FLAG_TC5: DMA1 Channel5 transfer complete flag.
\r
400 * @arg DMA1_FLAG_HT5: DMA1 Channel5 half transfer flag.
\r
401 * @arg DMA1_FLAG_TE5: DMA1 Channel5 transfer error flag.
\r
402 * @arg DMA1_FLAG_GL6: DMA1 Channel6 global flag.
\r
403 * @arg DMA1_FLAG_TC6: DMA1 Channel6 transfer complete flag.
\r
404 * @arg DMA1_FLAG_HT6: DMA1 Channel6 half transfer flag.
\r
405 * @arg DMA1_FLAG_TE6: DMA1 Channel6 transfer error flag.
\r
406 * @arg DMA1_FLAG_GL7: DMA1 Channel7 global flag.
\r
407 * @arg DMA1_FLAG_TC7: DMA1 Channel7 transfer complete flag.
\r
408 * @arg DMA1_FLAG_HT7: DMA1 Channel7 half transfer flag.
\r
409 * @arg DMA1_FLAG_TE7: DMA1 Channel7 transfer error flag.
\r
410 * @arg DMA2_FLAG_GL1: DMA2 Channel1 global flag.
\r
411 * @arg DMA2_FLAG_TC1: DMA2 Channel1 transfer complete flag.
\r
412 * @arg DMA2_FLAG_HT1: DMA2 Channel1 half transfer flag.
\r
413 * @arg DMA2_FLAG_TE1: DMA2 Channel1 transfer error flag.
\r
414 * @arg DMA2_FLAG_GL2: DMA2 Channel2 global flag.
\r
415 * @arg DMA2_FLAG_TC2: DMA2 Channel2 transfer complete flag.
\r
416 * @arg DMA2_FLAG_HT2: DMA2 Channel2 half transfer flag.
\r
417 * @arg DMA2_FLAG_TE2: DMA2 Channel2 transfer error flag.
\r
418 * @arg DMA2_FLAG_GL3: DMA2 Channel3 global flag.
\r
419 * @arg DMA2_FLAG_TC3: DMA2 Channel3 transfer complete flag.
\r
420 * @arg DMA2_FLAG_HT3: DMA2 Channel3 half transfer flag.
\r
421 * @arg DMA2_FLAG_TE3: DMA2 Channel3 transfer error flag.
\r
422 * @arg DMA2_FLAG_GL4: DMA2 Channel4 global flag.
\r
423 * @arg DMA2_FLAG_TC4: DMA2 Channel4 transfer complete flag.
\r
424 * @arg DMA2_FLAG_HT4: DMA2 Channel4 half transfer flag.
\r
425 * @arg DMA2_FLAG_TE4: DMA2 Channel4 transfer error flag.
\r
426 * @arg DMA2_FLAG_GL5: DMA2 Channel5 global flag.
\r
427 * @arg DMA2_FLAG_TC5: DMA2 Channel5 transfer complete flag.
\r
428 * @arg DMA2_FLAG_HT5: DMA2 Channel5 half transfer flag.
\r
429 * @arg DMA2_FLAG_TE5: DMA2 Channel5 transfer error flag.
\r
430 * @retval The new state of DMA_FLAG (SET or RESET).
\r
432 FlagStatus DMA_GetFlagStatus(uint32_t DMA_FLAG)
\r
434 FlagStatus bitstatus = RESET;
\r
435 uint32_t tmpreg = 0;
\r
436 /* Check the parameters */
\r
437 assert_param(IS_DMA_GET_FLAG(DMA_FLAG));
\r
439 /* Calculate the used DMA */
\r
440 if ((DMA_FLAG & FLAG_Mask) != (uint32_t)RESET)
\r
442 /* Get DMA2 ISR register value */
\r
443 tmpreg = DMA2->ISR ;
\r
447 /* Get DMA1 ISR register value */
\r
448 tmpreg = DMA1->ISR ;
\r
451 /* Check the status of the specified DMA flag */
\r
452 if ((tmpreg & DMA_FLAG) != (uint32_t)RESET)
\r
454 /* DMA_FLAG is set */
\r
459 /* DMA_FLAG is reset */
\r
463 /* Return the DMA_FLAG status */
\r
468 * @brief Clears the DMAy Channelx's pending flags.
\r
469 * @param DMA_FLAG: specifies the flag to clear.
\r
470 * This parameter can be any combination (for the same DMA) of the following values:
\r
471 * @arg DMA1_FLAG_GL1: DMA1 Channel1 global flag.
\r
472 * @arg DMA1_FLAG_TC1: DMA1 Channel1 transfer complete flag.
\r
473 * @arg DMA1_FLAG_HT1: DMA1 Channel1 half transfer flag.
\r
474 * @arg DMA1_FLAG_TE1: DMA1 Channel1 transfer error flag.
\r
475 * @arg DMA1_FLAG_GL2: DMA1 Channel2 global flag.
\r
476 * @arg DMA1_FLAG_TC2: DMA1 Channel2 transfer complete flag.
\r
477 * @arg DMA1_FLAG_HT2: DMA1 Channel2 half transfer flag.
\r
478 * @arg DMA1_FLAG_TE2: DMA1 Channel2 transfer error flag.
\r
479 * @arg DMA1_FLAG_GL3: DMA1 Channel3 global flag.
\r
480 * @arg DMA1_FLAG_TC3: DMA1 Channel3 transfer complete flag.
\r
481 * @arg DMA1_FLAG_HT3: DMA1 Channel3 half transfer flag.
\r
482 * @arg DMA1_FLAG_TE3: DMA1 Channel3 transfer error flag.
\r
483 * @arg DMA1_FLAG_GL4: DMA1 Channel4 global flag.
\r
484 * @arg DMA1_FLAG_TC4: DMA1 Channel4 transfer complete flag.
\r
485 * @arg DMA1_FLAG_HT4: DMA1 Channel4 half transfer flag.
\r
486 * @arg DMA1_FLAG_TE4: DMA1 Channel4 transfer error flag.
\r
487 * @arg DMA1_FLAG_GL5: DMA1 Channel5 global flag.
\r
488 * @arg DMA1_FLAG_TC5: DMA1 Channel5 transfer complete flag.
\r
489 * @arg DMA1_FLAG_HT5: DMA1 Channel5 half transfer flag.
\r
490 * @arg DMA1_FLAG_TE5: DMA1 Channel5 transfer error flag.
\r
491 * @arg DMA1_FLAG_GL6: DMA1 Channel6 global flag.
\r
492 * @arg DMA1_FLAG_TC6: DMA1 Channel6 transfer complete flag.
\r
493 * @arg DMA1_FLAG_HT6: DMA1 Channel6 half transfer flag.
\r
494 * @arg DMA1_FLAG_TE6: DMA1 Channel6 transfer error flag.
\r
495 * @arg DMA1_FLAG_GL7: DMA1 Channel7 global flag.
\r
496 * @arg DMA1_FLAG_TC7: DMA1 Channel7 transfer complete flag.
\r
497 * @arg DMA1_FLAG_HT7: DMA1 Channel7 half transfer flag.
\r
498 * @arg DMA1_FLAG_TE7: DMA1 Channel7 transfer error flag.
\r
499 * @arg DMA2_FLAG_GL1: DMA2 Channel1 global flag.
\r
500 * @arg DMA2_FLAG_TC1: DMA2 Channel1 transfer complete flag.
\r
501 * @arg DMA2_FLAG_HT1: DMA2 Channel1 half transfer flag.
\r
502 * @arg DMA2_FLAG_TE1: DMA2 Channel1 transfer error flag.
\r
503 * @arg DMA2_FLAG_GL2: DMA2 Channel2 global flag.
\r
504 * @arg DMA2_FLAG_TC2: DMA2 Channel2 transfer complete flag.
\r
505 * @arg DMA2_FLAG_HT2: DMA2 Channel2 half transfer flag.
\r
506 * @arg DMA2_FLAG_TE2: DMA2 Channel2 transfer error flag.
\r
507 * @arg DMA2_FLAG_GL3: DMA2 Channel3 global flag.
\r
508 * @arg DMA2_FLAG_TC3: DMA2 Channel3 transfer complete flag.
\r
509 * @arg DMA2_FLAG_HT3: DMA2 Channel3 half transfer flag.
\r
510 * @arg DMA2_FLAG_TE3: DMA2 Channel3 transfer error flag.
\r
511 * @arg DMA2_FLAG_GL4: DMA2 Channel4 global flag.
\r
512 * @arg DMA2_FLAG_TC4: DMA2 Channel4 transfer complete flag.
\r
513 * @arg DMA2_FLAG_HT4: DMA2 Channel4 half transfer flag.
\r
514 * @arg DMA2_FLAG_TE4: DMA2 Channel4 transfer error flag.
\r
515 * @arg DMA2_FLAG_GL5: DMA2 Channel5 global flag.
\r
516 * @arg DMA2_FLAG_TC5: DMA2 Channel5 transfer complete flag.
\r
517 * @arg DMA2_FLAG_HT5: DMA2 Channel5 half transfer flag.
\r
518 * @arg DMA2_FLAG_TE5: DMA2 Channel5 transfer error flag.
\r
521 void DMA_ClearFlag(uint32_t DMA_FLAG)
\r
523 /* Check the parameters */
\r
524 assert_param(IS_DMA_CLEAR_FLAG(DMA_FLAG));
\r
525 /* Calculate the used DMA */
\r
527 if ((DMA_FLAG & FLAG_Mask) != (uint32_t)RESET)
\r
529 /* Clear the selected DMA flags */
\r
530 DMA2->IFCR = DMA_FLAG;
\r
534 /* Clear the selected DMA flags */
\r
535 DMA1->IFCR = DMA_FLAG;
\r
540 * @brief Checks whether the specified DMAy Channelx interrupt has occurred or not.
\r
541 * @param DMA_IT: specifies the DMA interrupt source to check.
\r
542 * This parameter can be one of the following values:
\r
543 * @arg DMA1_IT_GL1: DMA1 Channel1 global interrupt.
\r
544 * @arg DMA1_IT_TC1: DMA1 Channel1 transfer complete interrupt.
\r
545 * @arg DMA1_IT_HT1: DMA1 Channel1 half transfer interrupt.
\r
546 * @arg DMA1_IT_TE1: DMA1 Channel1 transfer error interrupt.
\r
547 * @arg DMA1_IT_GL2: DMA1 Channel2 global interrupt.
\r
548 * @arg DMA1_IT_TC2: DMA1 Channel2 transfer complete interrupt.
\r
549 * @arg DMA1_IT_HT2: DMA1 Channel2 half transfer interrupt.
\r
550 * @arg DMA1_IT_TE2: DMA1 Channel2 transfer error interrupt.
\r
551 * @arg DMA1_IT_GL3: DMA1 Channel3 global interrupt.
\r
552 * @arg DMA1_IT_TC3: DMA1 Channel3 transfer complete interrupt.
\r
553 * @arg DMA1_IT_HT3: DMA1 Channel3 half transfer interrupt.
\r
554 * @arg DMA1_IT_TE3: DMA1 Channel3 transfer error interrupt.
\r
555 * @arg DMA1_IT_GL4: DMA1 Channel4 global interrupt.
\r
556 * @arg DMA1_IT_TC4: DMA1 Channel4 transfer complete interrupt.
\r
557 * @arg DMA1_IT_HT4: DMA1 Channel4 half transfer interrupt.
\r
558 * @arg DMA1_IT_TE4: DMA1 Channel4 transfer error interrupt.
\r
559 * @arg DMA1_IT_GL5: DMA1 Channel5 global interrupt.
\r
560 * @arg DMA1_IT_TC5: DMA1 Channel5 transfer complete interrupt.
\r
561 * @arg DMA1_IT_HT5: DMA1 Channel5 half transfer interrupt.
\r
562 * @arg DMA1_IT_TE5: DMA1 Channel5 transfer error interrupt.
\r
563 * @arg DMA1_IT_GL6: DMA1 Channel6 global interrupt.
\r
564 * @arg DMA1_IT_TC6: DMA1 Channel6 transfer complete interrupt.
\r
565 * @arg DMA1_IT_HT6: DMA1 Channel6 half transfer interrupt.
\r
566 * @arg DMA1_IT_TE6: DMA1 Channel6 transfer error interrupt.
\r
567 * @arg DMA1_IT_GL7: DMA1 Channel7 global interrupt.
\r
568 * @arg DMA1_IT_TC7: DMA1 Channel7 transfer complete interrupt.
\r
569 * @arg DMA1_IT_HT7: DMA1 Channel7 half transfer interrupt.
\r
570 * @arg DMA1_IT_TE7: DMA1 Channel7 transfer error interrupt.
\r
571 * @arg DMA2_IT_GL1: DMA2 Channel1 global interrupt.
\r
572 * @arg DMA2_IT_TC1: DMA2 Channel1 transfer complete interrupt.
\r
573 * @arg DMA2_IT_HT1: DMA2 Channel1 half transfer interrupt.
\r
574 * @arg DMA2_IT_TE1: DMA2 Channel1 transfer error interrupt.
\r
575 * @arg DMA2_IT_GL2: DMA2 Channel2 global interrupt.
\r
576 * @arg DMA2_IT_TC2: DMA2 Channel2 transfer complete interrupt.
\r
577 * @arg DMA2_IT_HT2: DMA2 Channel2 half transfer interrupt.
\r
578 * @arg DMA2_IT_TE2: DMA2 Channel2 transfer error interrupt.
\r
579 * @arg DMA2_IT_GL3: DMA2 Channel3 global interrupt.
\r
580 * @arg DMA2_IT_TC3: DMA2 Channel3 transfer complete interrupt.
\r
581 * @arg DMA2_IT_HT3: DMA2 Channel3 half transfer interrupt.
\r
582 * @arg DMA2_IT_TE3: DMA2 Channel3 transfer error interrupt.
\r
583 * @arg DMA2_IT_GL4: DMA2 Channel4 global interrupt.
\r
584 * @arg DMA2_IT_TC4: DMA2 Channel4 transfer complete interrupt.
\r
585 * @arg DMA2_IT_HT4: DMA2 Channel4 half transfer interrupt.
\r
586 * @arg DMA2_IT_TE4: DMA2 Channel4 transfer error interrupt.
\r
587 * @arg DMA2_IT_GL5: DMA2 Channel5 global interrupt.
\r
588 * @arg DMA2_IT_TC5: DMA2 Channel5 transfer complete interrupt.
\r
589 * @arg DMA2_IT_HT5: DMA2 Channel5 half transfer interrupt.
\r
590 * @arg DMA2_IT_TE5: DMA2 Channel5 transfer error interrupt.
\r
591 * @retval The new state of DMA_IT (SET or RESET).
\r
593 ITStatus DMA_GetITStatus(uint32_t DMA_IT)
\r
595 ITStatus bitstatus = RESET;
\r
596 uint32_t tmpreg = 0;
\r
597 /* Check the parameters */
\r
598 assert_param(IS_DMA_GET_IT(DMA_IT));
\r
600 /* Calculate the used DMA */
\r
601 if ((DMA_IT & FLAG_Mask) != (uint32_t)RESET)
\r
603 /* Get DMA2 ISR register value */
\r
604 tmpreg = DMA2->ISR ;
\r
608 /* Get DMA1 ISR register value */
\r
609 tmpreg = DMA1->ISR ;
\r
612 /* Check the status of the specified DMA interrupt */
\r
613 if ((tmpreg & DMA_IT) != (uint32_t)RESET)
\r
615 /* DMA_IT is set */
\r
620 /* DMA_IT is reset */
\r
623 /* Return the DMA_IT status */
\r
628 * @brief Clears the DMAy Channelx
\92s interrupt pending bits.
\r
629 * @param DMA_IT: specifies the DMA interrupt pending bit to clear.
\r
630 * This parameter can be any combination (for the same DMA) of the following values:
\r
631 * @arg DMA1_IT_GL1: DMA1 Channel1 global interrupt.
\r
632 * @arg DMA1_IT_TC1: DMA1 Channel1 transfer complete interrupt.
\r
633 * @arg DMA1_IT_HT1: DMA1 Channel1 half transfer interrupt.
\r
634 * @arg DMA1_IT_TE1: DMA1 Channel1 transfer error interrupt.
\r
635 * @arg DMA1_IT_GL2: DMA1 Channel2 global interrupt.
\r
636 * @arg DMA1_IT_TC2: DMA1 Channel2 transfer complete interrupt.
\r
637 * @arg DMA1_IT_HT2: DMA1 Channel2 half transfer interrupt.
\r
638 * @arg DMA1_IT_TE2: DMA1 Channel2 transfer error interrupt.
\r
639 * @arg DMA1_IT_GL3: DMA1 Channel3 global interrupt.
\r
640 * @arg DMA1_IT_TC3: DMA1 Channel3 transfer complete interrupt.
\r
641 * @arg DMA1_IT_HT3: DMA1 Channel3 half transfer interrupt.
\r
642 * @arg DMA1_IT_TE3: DMA1 Channel3 transfer error interrupt.
\r
643 * @arg DMA1_IT_GL4: DMA1 Channel4 global interrupt.
\r
644 * @arg DMA1_IT_TC4: DMA1 Channel4 transfer complete interrupt.
\r
645 * @arg DMA1_IT_HT4: DMA1 Channel4 half transfer interrupt.
\r
646 * @arg DMA1_IT_TE4: DMA1 Channel4 transfer error interrupt.
\r
647 * @arg DMA1_IT_GL5: DMA1 Channel5 global interrupt.
\r
648 * @arg DMA1_IT_TC5: DMA1 Channel5 transfer complete interrupt.
\r
649 * @arg DMA1_IT_HT5: DMA1 Channel5 half transfer interrupt.
\r
650 * @arg DMA1_IT_TE5: DMA1 Channel5 transfer error interrupt.
\r
651 * @arg DMA1_IT_GL6: DMA1 Channel6 global interrupt.
\r
652 * @arg DMA1_IT_TC6: DMA1 Channel6 transfer complete interrupt.
\r
653 * @arg DMA1_IT_HT6: DMA1 Channel6 half transfer interrupt.
\r
654 * @arg DMA1_IT_TE6: DMA1 Channel6 transfer error interrupt.
\r
655 * @arg DMA1_IT_GL7: DMA1 Channel7 global interrupt.
\r
656 * @arg DMA1_IT_TC7: DMA1 Channel7 transfer complete interrupt.
\r
657 * @arg DMA1_IT_HT7: DMA1 Channel7 half transfer interrupt.
\r
658 * @arg DMA1_IT_TE7: DMA1 Channel7 transfer error interrupt.
\r
659 * @arg DMA2_IT_GL1: DMA2 Channel1 global interrupt.
\r
660 * @arg DMA2_IT_TC1: DMA2 Channel1 transfer complete interrupt.
\r
661 * @arg DMA2_IT_HT1: DMA2 Channel1 half transfer interrupt.
\r
662 * @arg DMA2_IT_TE1: DMA2 Channel1 transfer error interrupt.
\r
663 * @arg DMA2_IT_GL2: DMA2 Channel2 global interrupt.
\r
664 * @arg DMA2_IT_TC2: DMA2 Channel2 transfer complete interrupt.
\r
665 * @arg DMA2_IT_HT2: DMA2 Channel2 half transfer interrupt.
\r
666 * @arg DMA2_IT_TE2: DMA2 Channel2 transfer error interrupt.
\r
667 * @arg DMA2_IT_GL3: DMA2 Channel3 global interrupt.
\r
668 * @arg DMA2_IT_TC3: DMA2 Channel3 transfer complete interrupt.
\r
669 * @arg DMA2_IT_HT3: DMA2 Channel3 half transfer interrupt.
\r
670 * @arg DMA2_IT_TE3: DMA2 Channel3 transfer error interrupt.
\r
671 * @arg DMA2_IT_GL4: DMA2 Channel4 global interrupt.
\r
672 * @arg DMA2_IT_TC4: DMA2 Channel4 transfer complete interrupt.
\r
673 * @arg DMA2_IT_HT4: DMA2 Channel4 half transfer interrupt.
\r
674 * @arg DMA2_IT_TE4: DMA2 Channel4 transfer error interrupt.
\r
675 * @arg DMA2_IT_GL5: DMA2 Channel5 global interrupt.
\r
676 * @arg DMA2_IT_TC5: DMA2 Channel5 transfer complete interrupt.
\r
677 * @arg DMA2_IT_HT5: DMA2 Channel5 half transfer interrupt.
\r
678 * @arg DMA2_IT_TE5: DMA2 Channel5 transfer error interrupt.
\r
681 void DMA_ClearITPendingBit(uint32_t DMA_IT)
\r
683 /* Check the parameters */
\r
684 assert_param(IS_DMA_CLEAR_IT(DMA_IT));
\r
686 /* Calculate the used DMA */
\r
687 if ((DMA_IT & FLAG_Mask) != (uint32_t)RESET)
\r
689 /* Clear the selected DMA interrupt pending bits */
\r
690 DMA2->IFCR = DMA_IT;
\r
694 /* Clear the selected DMA interrupt pending bits */
\r
695 DMA1->IFCR = DMA_IT;
\r
711 /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
\r