Mercurial > public > ostc4

comparison Discovery/Src/data_exchange_main.c @ 154:1ac5033f7c7a FlipDisplay

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Keep NSS low during SPI transfer only
author Ideenmodellierer
date Sun, 03 Mar 2019 17:45:39 +0100
parents e1d66bc78f9a
children 1fbdb45db701
comparison
equal deleted inserted replaced
153:791cdfad0c8e 154:1ac5033f7c7a
297 297
298 uint8_t DataEX_call(void) 298 uint8_t DataEX_call(void)
299 { 299 {
300 uint8_t SPI_DMA_answer = 0; 300 uint8_t SPI_DMA_answer = 0;
301 301
302 HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_SET);
303 delayMicros(10); //~exchange time(+20% reserve)
304 HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_RESET); 302 HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_RESET);
305 303
306 if(data_old__lost_connection_to_slave_counter_temp >= 3) 304 if(data_old__lost_connection_to_slave_counter_temp >= 3)
307 { 305 {
308 data_old__lost_connection_to_slave_counter_temp = 0; 306 data_old__lost_connection_to_slave_counter_temp = 0;
353 } 351 }
354 352
355 353
356 void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) 354 void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi)
357 { 355 {
358
359
360 if(hspi == &cpu2DmaSpi) 356 if(hspi == &cpu2DmaSpi)
361 { 357 {
358 HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_SET);
362 SPI_CALLBACKS+=1; 359 SPI_CALLBACKS+=1;
363 } 360 }
364 } 361 }
365 362
366 363