for Arduino TFT LCD Screen 160x128
Dependents: TFTLCDSCREEN Pong_ILI9163C
Fork of TFT_ILI9163C by
Diff: TFT_ILI9163C_F411RE_DMA.cpp
- Revision:
- 7:3dcb98ecf29f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TFT_ILI9163C_F411RE_DMA.cpp Sun Feb 01 15:36:04 2015 +0000 @@ -0,0 +1,242 @@ +#include "TFT_ILI9163C.h" +#if defined(__F411RE_DMA__) + +/** + * TFT_ILI9163C library for ST Nucleo F411RE DMA + * + * @author Copyright (c) 2014, .S.U.M.O.T.O.Y., coded by Max MC Costa + * https://github.com/sumotoy/TFT_ILI9163C + * + * @author modified by masuda, Masuda Naika + */ + +//Serial pc(SERIAL_TX, SERIAL_RX); + +//constructors +TFT_ILI9163C::TFT_ILI9163C(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName dc, PinName reset) + : TFT_ILI9163C_BASE(mosi, miso, sclk, cs, dc, reset) { + + _resetPinName = reset; + init(cs, dc); +} + +TFT_ILI9163C::TFT_ILI9163C(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName dc) + : TFT_ILI9163C_BASE(mosi, miso, sclk, cs, dc) { + + _resetPinName = NC; + init(cs, dc); +} + +void TFT_ILI9163C::init(PinName cs, PinName dc){ + + SPI_TypeDef *spi_ptr = (SPI_TypeDef*) _spi.spi; + + uint32_t cs_port_index = (uint32_t) cs >> 4; + uint32_t dc_port_index = (uint32_t) dc >> 4; + + //set cs/dc port addresses and masks + cs_port_reg = (GPIO_TypeDef *) (GPIOA_BASE + (cs_port_index << 10)); + cs_reg_mask = 1 << ((uint32_t) cs & 0xf); + dc_port_reg = (GPIO_TypeDef *) (GPIOA_BASE + (dc_port_index << 10)); + dc_reg_mask = 1 << ((uint32_t) dc & 0xf); + + // set bit band addresses +// GPIO_TypeDef *cs_port_reg = (GPIO_TypeDef *) (GPIOA_BASE + (cs_port_index << 10)); +// GPIO_TypeDef *dc_port_reg = (GPIO_TypeDef *) (GPIOA_BASE + (dc_port_index << 10)); +// uint8_t cs_port_bit = (uint32_t) cs & 0xf; +// uint8_t dc_port_bit = (uint32_t) dc & 0xf; +// bb_cs_port = BITBAND_PERIPH(&cs_port_reg->ODR, cs_port_bit); +// bb_dc_port = BITBAND_PERIPH(&dc_port_reg->ODR, dc_port_bit); + + bb_spi_txe = BITBAND_PERIPH(&spi_ptr->SR, MASK_TO_BITNUM(SPI_SR_TXE)); + bb_spi_bsy = BITBAND_PERIPH(&spi_ptr->SR, MASK_TO_BITNUM(SPI_SR_BSY)); + bb_spi_spe = BITBAND_PERIPH(&spi_ptr->CR1, MASK_TO_BITNUM(SPI_CR1_SPE)); + bb_spi_dff = BITBAND_PERIPH(&spi_ptr->CR1, MASK_TO_BITNUM(SPI_CR1_DFF)); + + // init DMA + hdma.Init.Direction = DMA_MEMORY_TO_PERIPH; + hdma.Init.PeriphInc = DMA_PINC_DISABLE; + hdma.Init.MemInc = DMA_MINC_DISABLE; + hdma.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; + hdma.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD; + hdma.Init.Mode = DMA_NORMAL; + hdma.Init.Priority = DMA_PRIORITY_MEDIUM; + hdma.Init.FIFOMode = DMA_FIFOMODE_ENABLE; + hdma.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_HALFFULL; + hdma.Init.MemBurst = DMA_MBURST_SINGLE; + hdma.Init.PeriphBurst = DMA_PBURST_SINGLE; + + if(_spi.spi == SPI_1){ + hdma.Instance = DMA2_Stream3; // DMA2_Stream2 + hdma.Init.Channel = DMA_CHANNEL_3; // DMA_CHANNEL_2 + __DMA2_CLK_ENABLE(); + } else if(_spi.spi == SPI_2){ + hdma.Instance = DMA1_Stream4; + hdma.Init.Channel = DMA_CHANNEL_0; + __DMA1_CLK_ENABLE(); + } else if(_spi.spi == SPI_3){ + hdma.Instance = DMA1_Stream5; // DMA1_Stream7 + hdma.Init.Channel = DMA_CHANNEL_0; // DMA_CHANNEL0 + __DMA1_CLK_ENABLE(); + } else if(_spi.spi == SPI_4){ + hdma.Instance = DMA2_Stream1; // DMA2_Stream4 + hdma.Init.Channel = DMA_CHANNEL_4; // DMA_CHANNEL_5 + __DMA2_CLK_ENABLE(); + } else if(_spi.spi == SPI_5){ + hdma.Instance = DMA2_Stream4; // DMA2_Stream5, DMA2_Stream6 + hdma.Init.Channel = DMA_CHANNEL_2; // DMA_CHANNEL5, DMA_CHANNEL7 + __DMA2_CLK_ENABLE(); + } + + HAL_DMA_Init(&hdma); + + // set SPI DR + hdma.Instance->PAR = (uint32_t) &spi_ptr->DR; + // set SPI MAR + hdma.Instance->M0AR = (uint32_t) &dmaBuff; + + // set bit band addresses + bb_spi_txdmaen = BITBAND_PERIPH(&spi_ptr->CR2, MASK_TO_BITNUM(SPI_CR2_TXDMAEN)); + bb_dma_sxcr_en = BITBAND_PERIPH(&hdma.Instance->CR, MASK_TO_BITNUM(DMA_SxCR_EN)); +} + +inline void TFT_ILI9163C::selectSlave() { + cs_port_reg->BSRRH = cs_reg_mask; // Use BSRR register +} + +inline void TFT_ILI9163C::deselectSlave() { + cs_port_reg->BSRRL = cs_reg_mask; +} + +inline void TFT_ILI9163C::setCommandMode() { + dc_port_reg->BSRRH = dc_reg_mask; +} + +inline void TFT_ILI9163C::setDataMode() { + dc_port_reg->BSRRL = dc_reg_mask; +} + +inline void TFT_ILI9163C::waitSpiFree() { + while (*bb_spi_txe == 0); + while (*bb_spi_bsy != 0); +} + +inline void TFT_ILI9163C::waitBufferFree() { + while (*bb_spi_txe == 0); +} + +inline void TFT_ILI9163C::set8bitMode() { + *bb_spi_spe = 0; + *bb_spi_dff = 0; + *bb_spi_spe = 1; +} + +inline void TFT_ILI9163C::set16bitMode() { + *bb_spi_spe = 0; + *bb_spi_dff = 1; + *bb_spi_spe = 1; +} + +void TFT_ILI9163C::writecommand(uint8_t c){ + + set8bitMode(); + setCommandMode(); + selectSlave(); + + SPI_TypeDef *spi_ptr = (SPI_TypeDef*) _spi.spi; + spi_ptr->DR = c; + + waitSpiFree(); + deselectSlave(); +} + +void TFT_ILI9163C::writedata(uint8_t c){ + + set8bitMode(); + setDataMode(); + selectSlave(); + + SPI_TypeDef *spi_ptr = (SPI_TypeDef*) _spi.spi; + spi_ptr->DR = c; + + waitSpiFree(); + deselectSlave(); +} + +void TFT_ILI9163C::writedata16(uint16_t d){ + + set16bitMode(); + setDataMode(); + selectSlave(); + + SPI_TypeDef *spi_ptr = (SPI_TypeDef*) _spi.spi; + spi_ptr->DR = d; + + waitSpiFree(); + deselectSlave(); +} + + +void TFT_ILI9163C::writedata32(uint16_t d1, uint16_t d2){ + + set16bitMode(); + setDataMode(); + selectSlave(); + + SPI_TypeDef *spi_ptr = (SPI_TypeDef*) _spi.spi; + spi_ptr->DR = d1; + waitBufferFree(); + spi_ptr->DR = d2; + + waitSpiFree(); + deselectSlave(); +} + +// use DMA, but polling... :-( +void TFT_ILI9163C::writedata16burst(uint16_t d, int32_t len) { + + len = len < 0 ? -len : len; + + if (len > 0) { + set16bitMode(); + setDataMode(); + selectSlave(); + + // clear DMA flags +// __HAL_DMA_CLEAR_FLAG(&hdma, __HAL_DMA_GET_TE_FLAG_INDEX(&hdma)); + __HAL_DMA_CLEAR_FLAG(&hdma, __HAL_DMA_GET_TC_FLAG_INDEX(&hdma)); + + dmaBuff = d; + hdma.Instance->NDTR = len; + +// // enable DMA +// hdma.Instance->CR |= DMA_SxCR_EN; +// // enable DMA request from SPI +// SPI_TypeDef *spi_ptr = (SPI_TypeDef*) _spi.spi; +// spi_ptr->CR2 |= SPI_CR2_TXDMAEN; +// // wait DMA complete +// while (hdma.Instance->NDTR); +// // disable SPI-DMA +// spi_ptr->CR2 &= ~SPI_CR2_TXDMAEN; +// // disable DMA +// hdma.Instance->CR &= ~DMA_SxCR_EN; +// while (hdma.Instance->CR & DMA_SxCR_EN); + + // enable DMA + *bb_dma_sxcr_en = 1; + // enable DMA request from SPI + *bb_spi_txdmaen = 1; + // wait DMA complete + while (hdma.Instance->NDTR); + // disable SPI-DMA + *bb_spi_txdmaen = 0; + // disable DMA + *bb_dma_sxcr_en = 0; + while (*bb_dma_sxcr_en); + + waitSpiFree(); + deselectSlave(); + } +} + +#endif