LPC: Finish DMA transfer, use HW SPI class (#19191)
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Victor Oliveira
GitHub
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160f70be63
@ -100,72 +100,25 @@
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#else
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// decide which HW SPI device to use
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#ifndef LPC_HW_SPI_DEV
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#if (SCK_PIN == P0_07 && MISO_PIN == P0_08 && MOSI_PIN == P0_09)
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#define LPC_HW_SPI_DEV 1
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#else
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#if (SCK_PIN == P0_15 && MISO_PIN == P0_17 && MOSI_PIN == P0_18)
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#define LPC_HW_SPI_DEV 0
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#else
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#error "Invalid pins selected for hardware SPI"
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#endif
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#endif
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#endif
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#if LPC_HW_SPI_DEV == 0
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#define LPC_SSPn LPC_SSP0
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#else
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#define LPC_SSPn LPC_SSP1
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#endif
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void spiBegin() { // setup SCK, MOSI & MISO pins for SSP0
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PINSEL_CFG_Type PinCfg; // data structure to hold init values
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PinCfg.Funcnum = 2;
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PinCfg.OpenDrain = 0;
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PinCfg.Pinmode = 0;
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PinCfg.Pinnum = LPC176x::pin_bit(SCK_PIN);
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PinCfg.Portnum = LPC176x::pin_port(SCK_PIN);
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PINSEL_ConfigPin(&PinCfg);
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SET_OUTPUT(SCK_PIN);
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PinCfg.Pinnum = LPC176x::pin_bit(MISO_PIN);
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PinCfg.Portnum = LPC176x::pin_port(MISO_PIN);
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PINSEL_ConfigPin(&PinCfg);
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SET_INPUT(MISO_PIN);
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PinCfg.Pinnum = LPC176x::pin_bit(MOSI_PIN);
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PinCfg.Portnum = LPC176x::pin_port(MOSI_PIN);
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PINSEL_ConfigPin(&PinCfg);
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SET_OUTPUT(MOSI_PIN);
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// divide PCLK by 2 for SSP0
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CLKPWR_SetPCLKDiv(LPC_HW_SPI_DEV == 0 ? CLKPWR_PCLKSEL_SSP0 : CLKPWR_PCLKSEL_SSP1, CLKPWR_PCLKSEL_CCLK_DIV_2);
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spiInit(0);
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SSP_Cmd(LPC_SSPn, ENABLE); // start SSP running
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spiInit(SPI_SPEED);
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}
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void spiInit(uint8_t spiRate) {
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// table to convert Marlin spiRates (0-5 plus default) into bit rates
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uint32_t Marlin_speed[7]; // CPSR is always 2
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Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
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Marlin_speed[1] = 4166667; //(SCR: 5) desired: 4,000,000 actual: 4,166,667 +4.2% SPI_HALF_SPEED
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Marlin_speed[2] = 2083333; //(SCR: 11) desired: 2,000,000 actual: 2,083,333 +4.2% SPI_QUARTER_SPEED
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Marlin_speed[3] = 1000000; //(SCR: 24) desired: 1,000,000 actual: 1,000,000 SPI_EIGHTH_SPEED
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Marlin_speed[4] = 500000; //(SCR: 49) desired: 500,000 actual: 500,000 SPI_SPEED_5
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Marlin_speed[5] = 250000; //(SCR: 99) desired: 250,000 actual: 250,000 SPI_SPEED_6
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Marlin_speed[6] = 125000; //(SCR:199) desired: 125,000 actual: 125,000 Default from HAL.h
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// setup for SPI mode
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SSP_CFG_Type HW_SPI_init; // data structure to hold init values
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SSP_ConfigStructInit(&HW_SPI_init); // set values for SPI mode
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HW_SPI_init.ClockRate = Marlin_speed[_MIN(spiRate, 6)]; // put in the specified bit rate
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HW_SPI_init.Mode |= SSP_CR1_SSP_EN;
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SSP_Init(LPC_SSPn, &HW_SPI_init); // puts the values into the proper bits in the SSP0 registers
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#if MISO_PIN == BOARD_SPI1_MISO_PIN
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SPI.setModule(1);
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#elif MISO_PIN == BOARD_SPI2_MISO_PIN
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SPI.setModule(2);
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#endif
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SPI.setDataSize(DATA_SIZE_8BIT);
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SPI.setDataMode(SPI_MODE0);
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SPI.setClock(SPISettings::spiRate2Clock(spiRate));
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SPI.begin();
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}
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static uint8_t doio(uint8_t b) {
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/* send and receive a single byte */
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SSP_SendData(LPC_SSPn, b & 0x00FF);
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while (SSP_GetStatus(LPC_SSPn, SSP_STAT_BUSY)); // wait for it to finish
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return SSP_ReceiveData(LPC_SSPn) & 0x00FF;
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return SPI.transfer(b & 0x00FF) & 0x00FF;
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}
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void spiSend(uint8_t b) { doio(b); }
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@ -224,6 +177,9 @@ SPIClass::SPIClass(uint8_t device) {
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PINSEL_CFG_Type PinCfg; // data structure to hold init values
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#if BOARD_NR_SPI >= 1
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_settings[0].spi_d = LPC_SSP0;
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_settings[0].dataMode = SPI_MODE0;
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_settings[0].dataSize = DATA_SIZE_8BIT;
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_settings[0].clock = SPI_CLOCK_MAX;
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// _settings[0].clockDivider = determine_baud_rate(_settings[0].spi_d, _settings[0].clock);
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PinCfg.Funcnum = 2;
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PinCfg.OpenDrain = 0;
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@ -246,6 +202,9 @@ SPIClass::SPIClass(uint8_t device) {
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#if BOARD_NR_SPI >= 2
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_settings[1].spi_d = LPC_SSP1;
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_settings[1].dataMode = SPI_MODE0;
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_settings[1].dataSize = DATA_SIZE_8BIT;
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_settings[1].clock = SPI_CLOCK_MAX;
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// _settings[1].clockDivider = determine_baud_rate(_settings[1].spi_d, _settings[1].clock);
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PinCfg.Funcnum = 2;
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PinCfg.OpenDrain = 0;
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@ -320,7 +279,7 @@ void SPIClass::dmaSend(void *buf, uint16_t length, bool minc) {
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// Destination memory - Not used
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GPDMACfg.DstMemAddr = 0;
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// Transfer size
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GPDMACfg.TransferSize = (minc ? length : 1);
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GPDMACfg.TransferSize = length;
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// Transfer width
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GPDMACfg.TransferWidth = (_currentSetting->dataSize == DATA_SIZE_16BIT) ? GPDMA_WIDTH_HALFWORD : GPDMA_WIDTH_BYTE;
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// Transfer type
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@ -335,8 +294,9 @@ void SPIClass::dmaSend(void *buf, uint16_t length, bool minc) {
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// Enable dma on SPI
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SSP_DMACmd(_currentSetting->spi_d, SSP_DMA_TX, ENABLE);
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// if minc=false, I'm repeating the same byte 'length' times, as I could not find yet how do GPDMA without memory increment
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do {
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// only increase memory if minc is true
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GPDMACfg.MemoryIncrease = (minc ? GPDMA_DMACCxControl_SI : 0);
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// Setup channel with given parameter
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GPDMA_Setup(&GPDMACfg);
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@ -344,7 +304,7 @@ void SPIClass::dmaSend(void *buf, uint16_t length, bool minc) {
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GPDMA_ChannelCmd(0, ENABLE);
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// wait data transfer
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while (!GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 0) && !GPDMA_IntGetStatus(GPDMA_STAT_INTERR, 0)) { }
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while (!GPDMA_IntGetStatus(GPDMA_STAT_RAWINTTC, 0) && !GPDMA_IntGetStatus(GPDMA_STAT_RAWINTERR, 0)) { }
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// clear err and int
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GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 0);
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@ -353,9 +313,6 @@ void SPIClass::dmaSend(void *buf, uint16_t length, bool minc) {
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// dma disable
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GPDMA_ChannelCmd(0, DISABLE);
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--length;
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} while (!minc && length > 0);
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waitSpiTxEnd(_currentSetting->spi_d);
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SSP_DMACmd(_currentSetting->spi_d, SSP_DMA_TX, DISABLE);
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@ -382,7 +339,7 @@ void SPIClass::setBitOrder(uint8_t bitOrder) {
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}
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void SPIClass::setDataMode(uint8_t dataMode) {
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_currentSetting->dataSize = dataMode;
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_currentSetting->dataMode = dataMode;
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}
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void SPIClass::setDataSize(uint32_t ds) {
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@ -24,7 +24,7 @@
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#if PIO_PLATFORM_VERSION < 1001
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#error "nxplpc-arduino-lpc176x package is out of date, Please update the PlatformIO platforms, frameworks and libraries. You may need to remove the platform and let it reinstall automatically."
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#endif
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#if PIO_FRAMEWORK_VERSION < 2002
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#if PIO_FRAMEWORK_VERSION < 2005
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#error "framework-arduino-lpc176x package is out of date, Please update the PlatformIO platforms, frameworks and libraries."
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#endif
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@ -61,7 +61,9 @@
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class SPISettings {
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public:
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SPISettings(uint32_t speed, int, int) : spi_speed(speed) {};
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SPISettings(uint32_t spiRate, int inBitOrder, int inDataMode) {
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init_AlwaysInline(spiRate2Clock(spiRate), inBitOrder, inDataMode, DATA_SIZE_8BIT);
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}
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SPISettings(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
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if (__builtin_constant_p(inClock))
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init_AlwaysInline(inClock, inBitOrder, inDataMode, inDataSize);
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@ -72,7 +74,19 @@ public:
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init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
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}
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uint32_t spiRate() const { return spi_speed; }
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//uint32_t spiRate() const { return spi_speed; }
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static inline uint32_t spiRate2Clock(uint32_t spiRate) {
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uint32_t Marlin_speed[7]; // CPSR is always 2
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Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
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Marlin_speed[1] = 4166667; //(SCR: 5) desired: 4,000,000 actual: 4,166,667 +4.2% SPI_HALF_SPEED
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Marlin_speed[2] = 2083333; //(SCR: 11) desired: 2,000,000 actual: 2,083,333 +4.2% SPI_QUARTER_SPEED
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Marlin_speed[3] = 1000000; //(SCR: 24) desired: 1,000,000 actual: 1,000,000 SPI_EIGHTH_SPEED
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Marlin_speed[4] = 500000; //(SCR: 49) desired: 500,000 actual: 500,000 SPI_SPEED_5
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Marlin_speed[5] = 250000; //(SCR: 99) desired: 250,000 actual: 250,000 SPI_SPEED_6
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Marlin_speed[6] = 125000; //(SCR:199) desired: 125,000 actual: 125,000 Default from HAL.h
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return Marlin_speed[spiRate > 6 ? 6 : spiRate];
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}
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private:
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void init_MightInline(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
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@ -85,7 +99,7 @@ private:
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dataSize = inDataSize;
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}
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uint32_t spi_speed;
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//uint32_t spi_speed;
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uint32_t clock;
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uint32_t dataSize;
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//uint32_t clockDivider;
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@ -122,7 +136,7 @@ public:
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void end();
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void beginTransaction(const SPISettings&);
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void endTransaction() {};
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void endTransaction() {}
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// Transfer using 1 "Data Size"
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uint8_t transfer(uint16_t data);
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@ -72,7 +72,6 @@ bool XPT2046::getRawPoint(int16_t *x, int16_t *y) {
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if (!isTouched()) return false;
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*x = getRawData(XPT2046_X);
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*y = getRawData(XPT2046_Y);
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SERIAL_ECHOLNPAIR("X: ", *x, ", Y: ", *y);
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return isTouched();
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}
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@ -275,9 +275,6 @@
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#define LCD_BACKLIGHT_PIN -1
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#elif HAS_SPI_TFT // Config for Classic UI (emulated DOGM) and Color UI
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#define SS_PIN -1
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//#define ONBOARD_SD_CS_PIN -1
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#define TFT_CS_PIN P1_22
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#define TFT_A0_PIN P1_23
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#define TFT_DC_PIN P1_23
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@ -285,7 +282,6 @@
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#define TFT_BACKLIGHT_PIN P1_18
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#define TFT_RESET_PIN P1_19
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#define LPC_HW_SPI_DEV 0
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#define LCD_USE_DMA_SPI
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#define TOUCH_INT_PIN P1_21
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@ -297,15 +293,18 @@
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#define GRAPHICAL_TFT_UPSCALE 3
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#endif
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// SPI 1
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#define SCK_PIN P0_15
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#define MISO_PIN P0_17
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#define MOSI_PIN P0_18
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// Disable any LCD related PINs config
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#define LCD_PINS_ENABLE -1
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#define LCD_PINS_RS -1
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// Emulated DOGM have xpt calibration values independent of display resolution
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#if ENABLED(SPI_GRAPHICAL_TFT)
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#define XPT2046_X_CALIBRATION -11245
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#define XPT2046_Y_CALIBRATION 8629
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#define XPT2046_X_OFFSET 685
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#define XPT2046_Y_OFFSET -285
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#endif
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#else
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#define BTN_ENC P0_28 // (58) open-drain
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@ -623,6 +623,7 @@ debug_tool = jlink
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#
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[common_LPC]
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platform = https://github.com/p3p/pio-nxplpc-arduino-lpc176x/archive/0.1.3.zip
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platform_packages = framework-arduino-lpc176x@^0.2.5
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board = nxp_lpc1768
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lib_ldf_mode = off
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lib_compat_mode = strict
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