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LPC: Finish DMA transfer, use HW SPI class (#19191)

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This commit is contained in:
Victor Oliveira
2020-09-10 02:41:26 -03:00
committed by Scott Lahteine
parent 8393c6a63d
commit 42619a3a81
6 changed files with 61 additions and 91 deletions
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109
Marlin/src/HAL/LPC1768/HAL_SPI.cpp
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@@ -100,72 +100,25 @@
#else
// decide which HW SPI device to use
#ifndef LPC_HW_SPI_DEV
#if (SCK_PIN == P0_07 && MISO_PIN == P0_08 && MOSI_PIN == P0_09)
#define LPC_HW_SPI_DEV 1
#else
#if (SCK_PIN == P0_15 && MISO_PIN == P0_17 && MOSI_PIN == P0_18)
#define LPC_HW_SPI_DEV 0
#else
#error "Invalid pins selected for hardware SPI"
#endif
#endif
#endif
#if LPC_HW_SPI_DEV == 0
#define LPC_SSPn LPC_SSP0
#else
#define LPC_SSPn LPC_SSP1
#endif
void spiBegin() { // setup SCK, MOSI & MISO pins for SSP0
PINSEL_CFG_Type PinCfg; // data structure to hold init values
PinCfg.Funcnum = 2;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = LPC176x::pin_bit(SCK_PIN);
PinCfg.Portnum = LPC176x::pin_port(SCK_PIN);
PINSEL_ConfigPin(&PinCfg);
SET_OUTPUT(SCK_PIN);
PinCfg.Pinnum = LPC176x::pin_bit(MISO_PIN);
PinCfg.Portnum = LPC176x::pin_port(MISO_PIN);
PINSEL_ConfigPin(&PinCfg);
SET_INPUT(MISO_PIN);
PinCfg.Pinnum = LPC176x::pin_bit(MOSI_PIN);
PinCfg.Portnum = LPC176x::pin_port(MOSI_PIN);
PINSEL_ConfigPin(&PinCfg);
SET_OUTPUT(MOSI_PIN);
// divide PCLK by 2 for SSP0
CLKPWR_SetPCLKDiv(LPC_HW_SPI_DEV == 0 ? CLKPWR_PCLKSEL_SSP0 : CLKPWR_PCLKSEL_SSP1, CLKPWR_PCLKSEL_CCLK_DIV_2);
spiInit(0);
SSP_Cmd(LPC_SSPn, ENABLE); // start SSP running
spiInit(SPI_SPEED);
}
void spiInit(uint8_t spiRate) {
// table to convert Marlin spiRates (0-5 plus default) into bit rates
uint32_t Marlin_speed[7]; // CPSR is always 2
Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
Marlin_speed[1] = 4166667; //(SCR: 5) desired: 4,000,000 actual: 4,166,667 +4.2% SPI_HALF_SPEED
Marlin_speed[2] = 2083333; //(SCR: 11) desired: 2,000,000 actual: 2,083,333 +4.2% SPI_QUARTER_SPEED
Marlin_speed[3] = 1000000; //(SCR: 24) desired: 1,000,000 actual: 1,000,000 SPI_EIGHTH_SPEED
Marlin_speed[4] = 500000; //(SCR: 49) desired: 500,000 actual: 500,000 SPI_SPEED_5
Marlin_speed[5] = 250000; //(SCR: 99) desired: 250,000 actual: 250,000 SPI_SPEED_6
Marlin_speed[6] = 125000; //(SCR:199) desired: 125,000 actual: 125,000 Default from HAL.h
// setup for SPI mode
SSP_CFG_Type HW_SPI_init; // data structure to hold init values
SSP_ConfigStructInit(&HW_SPI_init); // set values for SPI mode
HW_SPI_init.ClockRate = Marlin_speed[_MIN(spiRate, 6)]; // put in the specified bit rate
HW_SPI_init.Mode |= SSP_CR1_SSP_EN;
SSP_Init(LPC_SSPn, &HW_SPI_init); // puts the values into the proper bits in the SSP0 registers
#if MISO_PIN == BOARD_SPI1_MISO_PIN
SPI.setModule(1);
#elif MISO_PIN == BOARD_SPI2_MISO_PIN
SPI.setModule(2);
#endif
SPI.setDataSize(DATA_SIZE_8BIT);
SPI.setDataMode(SPI_MODE0);
SPI.setClock(SPISettings::spiRate2Clock(spiRate));
SPI.begin();
}
static uint8_t doio(uint8_t b) {
/* send and receive a single byte */
SSP_SendData(LPC_SSPn, b & 0x00FF);
while (SSP_GetStatus(LPC_SSPn, SSP_STAT_BUSY)); // wait for it to finish
return SSP_ReceiveData(LPC_SSPn) & 0x00FF;
return SPI.transfer(b & 0x00FF) & 0x00FF;
}
void spiSend(uint8_t b) { doio(b); }
@@ -224,6 +177,9 @@ SPIClass::SPIClass(uint8_t device) {
PINSEL_CFG_Type PinCfg; // data structure to hold init values
#if BOARD_NR_SPI >= 1
_settings[0].spi_d = LPC_SSP0;
_settings[0].dataMode = SPI_MODE0;
_settings[0].dataSize = DATA_SIZE_8BIT;
_settings[0].clock = SPI_CLOCK_MAX;
// _settings[0].clockDivider = determine_baud_rate(_settings[0].spi_d, _settings[0].clock);
PinCfg.Funcnum = 2;
PinCfg.OpenDrain = 0;
@@ -246,6 +202,9 @@ SPIClass::SPIClass(uint8_t device) {
#if BOARD_NR_SPI >= 2
_settings[1].spi_d = LPC_SSP1;
_settings[1].dataMode = SPI_MODE0;
_settings[1].dataSize = DATA_SIZE_8BIT;
_settings[1].clock = SPI_CLOCK_MAX;
// _settings[1].clockDivider = determine_baud_rate(_settings[1].spi_d, _settings[1].clock);
PinCfg.Funcnum = 2;
PinCfg.OpenDrain = 0;
@@ -320,7 +279,7 @@ void SPIClass::dmaSend(void *buf, uint16_t length, bool minc) {
// Destination memory - Not used
GPDMACfg.DstMemAddr = 0;
// Transfer size
GPDMACfg.TransferSize = (minc ? length : 1);
GPDMACfg.TransferSize = length;
// Transfer width
GPDMACfg.TransferWidth = (_currentSetting->dataSize == DATA_SIZE_16BIT) ? GPDMA_WIDTH_HALFWORD : GPDMA_WIDTH_BYTE;
// Transfer type
@@ -335,26 +294,24 @@ void SPIClass::dmaSend(void *buf, uint16_t length, bool minc) {
// Enable dma on SPI
SSP_DMACmd(_currentSetting->spi_d, SSP_DMA_TX, ENABLE);
// if minc=false, I'm repeating the same byte 'length' times, as I could not find yet how do GPDMA without memory increment
do {
// Setup channel with given parameter
GPDMA_Setup(&GPDMACfg);
// only increase memory if minc is true
GPDMACfg.MemoryIncrease = (minc ? GPDMA_DMACCxControl_SI : 0);
// enabled dma
GPDMA_ChannelCmd(0, ENABLE);
// Setup channel with given parameter
GPDMA_Setup(&GPDMACfg);
// wait data transfer
while (!GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 0) && !GPDMA_IntGetStatus(GPDMA_STAT_INTERR, 0)) { }
// enabled dma
GPDMA_ChannelCmd(0, ENABLE);
// clear err and int
GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 0);
GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 0);
// wait data transfer
while (!GPDMA_IntGetStatus(GPDMA_STAT_RAWINTTC, 0) && !GPDMA_IntGetStatus(GPDMA_STAT_RAWINTERR, 0)) { }
// dma disable
GPDMA_ChannelCmd(0, DISABLE);
// clear err and int
GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 0);
GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 0);
--length;
} while (!minc && length > 0);
// dma disable
GPDMA_ChannelCmd(0, DISABLE);
waitSpiTxEnd(_currentSetting->spi_d);
@@ -382,7 +339,7 @@ void SPIClass::setBitOrder(uint8_t bitOrder) {
}
void SPIClass::setDataMode(uint8_t dataMode) {
_currentSetting->dataSize = dataMode;
_currentSetting->dataMode = dataMode;
}
void SPIClass::setDataSize(uint32_t ds) {

2
Marlin/src/HAL/LPC1768/inc/SanityCheck.h
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@@ -24,7 +24,7 @@
#if PIO_PLATFORM_VERSION < 1001
#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."
#endif
#if PIO_FRAMEWORK_VERSION < 2002
#if PIO_FRAMEWORK_VERSION < 2005
#error "framework-arduino-lpc176x package is out of date, Please update the PlatformIO platforms, frameworks and libraries."
#endif

22
Marlin/src/HAL/LPC1768/include/SPI.h
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@@ -61,7 +61,9 @@
class SPISettings {
public:
SPISettings(uint32_t speed, int, int) : spi_speed(speed) {};
SPISettings(uint32_t spiRate, int inBitOrder, int inDataMode) {
init_AlwaysInline(spiRate2Clock(spiRate), inBitOrder, inDataMode, DATA_SIZE_8BIT);
}
SPISettings(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
if (__builtin_constant_p(inClock))
init_AlwaysInline(inClock, inBitOrder, inDataMode, inDataSize);
@@ -72,7 +74,19 @@ public:
init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
}
uint32_t spiRate() const { return spi_speed; }
//uint32_t spiRate() const { return spi_speed; }
static inline uint32_t spiRate2Clock(uint32_t spiRate) {
uint32_t Marlin_speed[7]; // CPSR is always 2
Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
Marlin_speed[1] = 4166667; //(SCR: 5) desired: 4,000,000 actual: 4,166,667 +4.2% SPI_HALF_SPEED
Marlin_speed[2] = 2083333; //(SCR: 11) desired: 2,000,000 actual: 2,083,333 +4.2% SPI_QUARTER_SPEED
Marlin_speed[3] = 1000000; //(SCR: 24) desired: 1,000,000 actual: 1,000,000 SPI_EIGHTH_SPEED
Marlin_speed[4] = 500000; //(SCR: 49) desired: 500,000 actual: 500,000 SPI_SPEED_5
Marlin_speed[5] = 250000; //(SCR: 99) desired: 250,000 actual: 250,000 SPI_SPEED_6
Marlin_speed[6] = 125000; //(SCR:199) desired: 125,000 actual: 125,000 Default from HAL.h
return Marlin_speed[spiRate > 6 ? 6 : spiRate];
}
private:
void init_MightInline(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
@@ -85,7 +99,7 @@ private:
dataSize = inDataSize;
}
uint32_t spi_speed;
//uint32_t spi_speed;
uint32_t clock;
uint32_t dataSize;
//uint32_t clockDivider;
@@ -122,7 +136,7 @@ public:
void end();
void beginTransaction(const SPISettings&);
void endTransaction() {};
void endTransaction() {}
// Transfer using 1 "Data Size"
uint8_t transfer(uint16_t data);

1
Marlin/src/HAL/LPC1768/tft/xpt2046.cpp
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@@ -72,7 +72,6 @@ bool XPT2046::getRawPoint(int16_t *x, int16_t *y) {
if (!isTouched()) return false;
*x = getRawData(XPT2046_X);
*y = getRawData(XPT2046_Y);
SERIAL_ECHOLNPAIR("X: ", *x, ", Y: ", *y);
return isTouched();
}

17
Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
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@@ -275,9 +275,6 @@
#define LCD_BACKLIGHT_PIN -1
#elif HAS_SPI_TFT // Config for Classic UI (emulated DOGM) and Color UI
#define SS_PIN -1
//#define ONBOARD_SD_CS_PIN -1
#define TFT_CS_PIN P1_22
#define TFT_A0_PIN P1_23
#define TFT_DC_PIN P1_23
@@ -285,7 +282,6 @@
#define TFT_BACKLIGHT_PIN P1_18
#define TFT_RESET_PIN P1_19
#define LPC_HW_SPI_DEV 0
#define LCD_USE_DMA_SPI
#define TOUCH_INT_PIN P1_21
@@ -297,15 +293,18 @@
#define GRAPHICAL_TFT_UPSCALE 3
#endif
// SPI 1
#define SCK_PIN P0_15
#define MISO_PIN P0_17
#define MOSI_PIN P0_18
// Disable any LCD related PINs config
#define LCD_PINS_ENABLE -1
#define LCD_PINS_RS -1
// Emulated DOGM have xpt calibration values independent of display resolution
#if ENABLED(SPI_GRAPHICAL_TFT)
#define XPT2046_X_CALIBRATION -11245
#define XPT2046_Y_CALIBRATION 8629
#define XPT2046_X_OFFSET 685
#define XPT2046_Y_OFFSET -285
#endif
#else
#define BTN_ENC P0_28 // (58) open-drain

1
platformio.ini
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@@ -623,6 +623,7 @@ debug_tool = jlink
#
[common_LPC]
platform = https://github.com/p3p/pio-nxplpc-arduino-lpc176x/archive/0.1.3.zip
platform_packages = framework-arduino-lpc176x@^0.2.5
board = nxp_lpc1768
lib_ldf_mode = off
lib_compat_mode = strict