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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- *
- */
-
- #include "MarlinSPI.h"
-
- static void spi_init(spi_t *obj, uint32_t speed, spi_mode_e mode, uint8_t msb, uint32_t dataSize) {
- spi_init(obj, speed, mode, msb);
- // spi_init set 8bit always
- // TODO: copy the code from spi_init and handle data size, to avoid double init always!!
- if (dataSize != SPI_DATASIZE_8BIT) {
- obj->handle.Init.DataSize = dataSize;
- HAL_SPI_Init(&obj->handle);
- __HAL_SPI_ENABLE(&obj->handle);
- }
- }
-
- void MarlinSPI::setClockDivider(uint8_t _div) {
- _speed = spi_getClkFreq(&_spi);// / _div;
- _clockDivider = _div;
- }
-
- void MarlinSPI::begin(void) {
- //TODO: only call spi_init if any parameter changed!!
- spi_init(&_spi, _speed, _dataMode, _bitOrder, _dataSize);
- }
-
- void MarlinSPI::setupDma(SPI_HandleTypeDef &_spiHandle, DMA_HandleTypeDef &_dmaHandle, uint32_t direction, bool minc) {
- _dmaHandle.Init.Direction = direction;
- _dmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
- _dmaHandle.Init.Mode = DMA_NORMAL;
- _dmaHandle.Init.Priority = DMA_PRIORITY_LOW;
- _dmaHandle.Init.MemInc = minc ? DMA_MINC_ENABLE : DMA_MINC_DISABLE;
-
- if (_dataSize == DATA_SIZE_8BIT) {
- _dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
- _dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
- }
- else {
- _dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
- _dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
- }
- #ifdef STM32F4xx
- _dmaHandle.Init.Channel = DMA_CHANNEL_3;
- _dmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
- #endif
-
- // start DMA hardware
- // TODO: check if hardware is already enabled
- #ifdef SPI1_BASE
- if (_spiHandle.Instance == SPI1) {
- #ifdef STM32F1xx
- __HAL_RCC_DMA1_CLK_ENABLE();
- _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel3 : DMA1_Channel2;
- #elif defined(STM32F4xx)
- __HAL_RCC_DMA2_CLK_ENABLE();
- _dmaHandle.Instance = DMA2_Stream3;
- #endif
- }
- #endif
- #ifdef SPI2_BASE
- if (_spiHandle.Instance == SPI2) {
- #ifdef STM32F1xx
- __HAL_RCC_DMA1_CLK_ENABLE();
- _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel5 : DMA1_Channel4;
- #elif defined(STM32F4xx)
- //TODO: f4 dma config
- #endif
- }
- #endif
- #ifdef SPI3_BASE
- if (_spiHandle.Instance == SPI3) {
- #ifdef STM32F1xx
- __HAL_RCC_DMA2_CLK_ENABLE();
- _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Channel2 : DMA2_Channel1;
- #elif defined(STM32F4xx)
- //TODO: f4 dma config
- #endif
- }
- #endif
-
- HAL_DMA_Init(&_dmaHandle);
- }
-
- byte MarlinSPI::transfer(uint8_t _data) {
- uint8_t rxData = 0xFF;
- HAL_SPI_TransmitReceive(&_spi.handle, &_data, &rxData, 1, HAL_MAX_DELAY);
- return rxData;
- }
-
- uint8_t MarlinSPI::dmaTransfer(const void *transmitBuf, void *receiveBuf, uint16_t length) {
- const uint8_t ff = 0xFF;
-
- //if ((hspi->Instance->CR1 & SPI_CR1_SPE) != SPI_CR1_SPE) //only enable if disabled
- __HAL_SPI_ENABLE(&_spi.handle);
-
- if (receiveBuf) {
- setupDma(_spi.handle, _dmaRx, DMA_PERIPH_TO_MEMORY, true);
- HAL_DMA_Start(&_dmaRx, (uint32_t)&(_spi.handle.Instance->DR), (uint32_t)receiveBuf, length);
- SET_BIT(_spi.handle.Instance->CR2, SPI_CR2_RXDMAEN); /* Enable Rx DMA Request */
- }
-
- // check for 2 lines transfer
- bool mincTransmit = true;
- if (transmitBuf == nullptr && _spi.handle.Init.Direction == SPI_DIRECTION_2LINES && _spi.handle.Init.Mode == SPI_MODE_MASTER) {
- transmitBuf = &ff;
- mincTransmit = false;
- }
-
- if (transmitBuf) {
- setupDma(_spi.handle, _dmaTx, DMA_MEMORY_TO_PERIPH, mincTransmit);
- HAL_DMA_Start(&_dmaTx, (uint32_t)transmitBuf, (uint32_t)&(_spi.handle.Instance->DR), length);
- SET_BIT(_spi.handle.Instance->CR2, SPI_CR2_TXDMAEN); /* Enable Tx DMA Request */
- }
-
- if (transmitBuf) {
- HAL_DMA_PollForTransfer(&_dmaTx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
- HAL_DMA_Abort(&_dmaTx);
- HAL_DMA_DeInit(&_dmaTx);
- }
-
- // while ((_spi.handle.Instance->SR & SPI_FLAG_RXNE) != SPI_FLAG_RXNE) {}
-
- if (receiveBuf) {
- HAL_DMA_PollForTransfer(&_dmaRx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
- HAL_DMA_Abort(&_dmaRx);
- HAL_DMA_DeInit(&_dmaRx);
- }
-
- return 1;
- }
-
- uint8_t MarlinSPI::dmaSend(const void * transmitBuf, uint16_t length, bool minc) {
- setupDma(_spi.handle, _dmaTx, DMA_MEMORY_TO_PERIPH, minc);
- HAL_DMA_Start(&_dmaTx, (uint32_t)transmitBuf, (uint32_t)&(_spi.handle.Instance->DR), length);
- __HAL_SPI_ENABLE(&_spi.handle);
- SET_BIT(_spi.handle.Instance->CR2, SPI_CR2_TXDMAEN); /* Enable Tx DMA Request */
- HAL_DMA_PollForTransfer(&_dmaTx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
- HAL_DMA_Abort(&_dmaTx);
- // DeInit objects
- HAL_DMA_DeInit(&_dmaTx);
- return 1;
- }
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