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STM32 soft SPI. STEVAL_3DP001V1 SD read. M906 tweaks. (#16579)

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Bob-the-Kuhn
2020-01-14 23:22:16 -06:00
committed by Scott Lahteine
parent 91a399ae7f
commit 0d0dfba203
5 changed files with 535 additions and 146 deletions
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270
Marlin/src/HAL/HAL_STM32/HAL_SPI.cpp
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@ -37,121 +37,193 @@ static SPISettings spiConfig;
// ------------------------
#if ENABLED(SOFTWARE_SPI)
// ------------------------
// Software SPI
// ------------------------
#error "Software SPI not supported for STM32. Use Hardware SPI."
#include "../shared/Delay.h"
void spiBegin(void) {
OUT_WRITE(SS_PIN, HIGH);
OUT_WRITE(SCK_PIN, HIGH);
SET_INPUT(MISO_PIN);
OUT_WRITE(MOSI_PIN, HIGH);
}
static uint16_t delay_STM32_soft_spi;
void spiInit(uint8_t spiRate) {
// Use datarates Marlin uses
switch (spiRate) {
case SPI_FULL_SPEED: delay_STM32_soft_spi = 125; break; // desired: 8,000,000 actual: ~1.1M
case SPI_HALF_SPEED: delay_STM32_soft_spi = 125; break; // desired: 4,000,000 actual: ~1.1M
case SPI_QUARTER_SPEED:delay_STM32_soft_spi = 250; break; // desired: 2,000,000 actual: ~890K
case SPI_EIGHTH_SPEED: delay_STM32_soft_spi = 500; break; // desired: 1,000,000 actual: ~590K
case SPI_SPEED_5: delay_STM32_soft_spi = 1000; break; // desired: 500,000 actual: ~360K
case SPI_SPEED_6: delay_STM32_soft_spi = 2000; break; // desired: 250,000 actual: ~210K
default: delay_STM32_soft_spi = 4000; break; // desired: 125,000 actual: ~123K
}
SPI.begin();
}
// Begin SPI transaction, set clock, bit order, data mode
void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) { /* do nothing */ }
uint8_t HAL_SPI_STM32_SpiTransfer_Mode_3(uint8_t b) { // using Mode 3
for (uint8_t bits = 8; bits--;) {
WRITE(SCK_PIN, LOW);
WRITE(MOSI_PIN, b & 0x80);
DELAY_NS(delay_STM32_soft_spi);
WRITE(SCK_PIN, HIGH);
DELAY_NS(delay_STM32_soft_spi);
b <<= 1; // little setup time
b |= (READ(MISO_PIN) != 0);
}
DELAY_NS(125);
return b;
}
// Soft SPI receive byte
uint8_t spiRec() {
DISABLE_ISRS(); // No interrupts during byte receive
const uint8_t data = HAL_SPI_STM32_SpiTransfer_Mode_3(0xFF);
ENABLE_ISRS(); // Enable interrupts
return data;
}
// Soft SPI read data
void spiRead(uint8_t *buf, uint16_t nbyte) {
for (uint16_t i = 0; i < nbyte; i++)
buf[i] = spiRec();
}
// Soft SPI send byte
void spiSend(uint8_t data) {
DISABLE_ISRS(); // No interrupts during byte send
HAL_SPI_STM32_SpiTransfer_Mode_3(data); // Don't care what is received
ENABLE_ISRS(); // Enable interrupts
}
// Soft SPI send block
void spiSendBlock(uint8_t token, const uint8_t *buf) {
spiSend(token);
for (uint16_t i = 0; i < 512; i++)
spiSend(buf[i]);
}
#else
// ------------------------
// Hardware SPI
// ------------------------
// ------------------------
// Hardware SPI
// ------------------------
/**
* VGPV SPI speed start and PCLK2/2, by default 108/2 = 54Mhz
*/
/**
* VGPV SPI speed start and PCLK2/2, by default 108/2 = 54Mhz
*/
/**
* @brief Begin SPI port setup
*
* @return Nothing
*
* @details Only configures SS pin since stm32duino creates and initialize the SPI object
*/
void spiBegin() {
#if !PIN_EXISTS(SS)
#error "SS_PIN not defined!"
#endif
/**
* @brief Begin SPI port setup
*
* @return Nothing
*
* @details Only configures SS pin since stm32duino creates and initialize the SPI object
*/
void spiBegin() {
#if !PIN_EXISTS(SS)
#error "SS_PIN not defined!"
#endif
OUT_WRITE(SS_PIN, HIGH);
}
/** Configure SPI for specified SPI speed */
void spiInit(uint8_t spiRate) {
// Use datarates Marlin uses
uint32_t clock;
switch (spiRate) {
case SPI_FULL_SPEED: clock = 20000000; break; // 13.9mhz=20000000 6.75mhz=10000000 3.38mhz=5000000 .833mhz=1000000
case SPI_HALF_SPEED: clock = 5000000; break;
case SPI_QUARTER_SPEED: clock = 2500000; break;
case SPI_EIGHTH_SPEED: clock = 1250000; break;
case SPI_SPEED_5: clock = 625000; break;
case SPI_SPEED_6: clock = 300000; break;
default:
clock = 4000000; // Default from the SPI library
OUT_WRITE(SS_PIN, HIGH);
}
spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
#if ENABLED(CUSTOM_SPI_PINS)
SPI.setMISO(MISO_PIN);
SPI.setMOSI(MOSI_PIN);
SPI.setSCLK(SCK_PIN);
SPI.setSSEL(SS_PIN);
#endif
// Configure SPI for specified SPI speed
void spiInit(uint8_t spiRate) {
// Use datarates Marlin uses
uint32_t clock;
switch (spiRate) {
case SPI_FULL_SPEED: clock = 20000000; break; // 13.9mhz=20000000 6.75mhz=10000000 3.38mhz=5000000 .833mhz=1000000
case SPI_HALF_SPEED: clock = 5000000; break;
case SPI_QUARTER_SPEED: clock = 2500000; break;
case SPI_EIGHTH_SPEED: clock = 1250000; break;
case SPI_SPEED_5: clock = 625000; break;
case SPI_SPEED_6: clock = 300000; break;
default:
clock = 4000000; // Default from the SPI library
}
spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
SPI.begin();
}
#if ENABLED(CUSTOM_SPI_PINS)
SPI.setMISO(MISO_PIN);
SPI.setMOSI(MOSI_PIN);
SPI.setSCLK(SCK_PIN);
SPI.setSSEL(SS_PIN);
#endif
/**
* @brief Receives a single byte from the SPI port.
*
* @return Byte received
*
* @details
*/
uint8_t spiRec() {
SPI.beginTransaction(spiConfig);
uint8_t returnByte = SPI.transfer(0xFF);
SPI.endTransaction();
return returnByte;
}
SPI.begin();
}
/**
* @brief Receives a number of bytes from the SPI port to a buffer
*
* @param buf Pointer to starting address of buffer to write to.
* @param nbyte Number of bytes to receive.
* @return Nothing
*
* @details Uses DMA
*/
void spiRead(uint8_t* buf, uint16_t nbyte) {
if (nbyte == 0) return;
memset(buf, 0xFF, nbyte);
SPI.beginTransaction(spiConfig);
SPI.transfer(buf, nbyte);
SPI.endTransaction();
}
/**
* @brief Receives a single byte from the SPI port.
*
* @return Byte received
*
* @details
*/
uint8_t spiRec() {
SPI.beginTransaction(spiConfig);
uint8_t returnByte = SPI.transfer(0xFF);
SPI.endTransaction();
return returnByte;
}
/**
* @brief Sends a single byte on SPI port
*
* @param b Byte to send
*
* @details
*/
void spiSend(uint8_t b) {
SPI.beginTransaction(spiConfig);
SPI.transfer(b);
SPI.endTransaction();
}
/**
* @brief Receive a number of bytes from the SPI port to a buffer
*
* @param buf Pointer to starting address of buffer to write to.
* @param nbyte Number of bytes to receive.
* @return Nothing
*
* @details Uses DMA
*/
void spiRead(uint8_t* buf, uint16_t nbyte) {
if (nbyte == 0) return;
memset(buf, 0xFF, nbyte);
SPI.beginTransaction(spiConfig);
SPI.transfer(buf, nbyte);
SPI.endTransaction();
}
/**
* @brief Write token and then write from 512 byte buffer to SPI (for SD card)
*
* @param buf Pointer with buffer start address
* @return Nothing
*
* @details Use DMA
*/
void spiSendBlock(uint8_t token, const uint8_t* buf) {
uint8_t rxBuf[512];
SPI.beginTransaction(spiConfig);
SPI.transfer(token);
SPI.transfer((uint8_t*)buf, &rxBuf, 512);
SPI.endTransaction();
}
/**
* @brief Send a single byte on SPI port
*
* @param b Byte to send
*
* @details
*/
void spiSend(uint8_t b) {
SPI.beginTransaction(spiConfig);
SPI.transfer(b);
SPI.endTransaction();
}
/**
* @brief Write token and then write from 512 byte buffer to SPI (for SD card)
*
* @param buf Pointer with buffer start address
* @return Nothing
*
* @details Use DMA
*/
void spiSendBlock(uint8_t token, const uint8_t* buf) {
uint8_t rxBuf[512];
SPI.beginTransaction(spiConfig);
SPI.transfer(token);
SPI.transfer((uint8_t*)buf, &rxBuf, 512);
SPI.endTransaction();
}
#endif // SOFTWARE_SPI