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🍻 Preliminary fix for Max31865 SPI (#22682)

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Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
x301
Jin 3 years ago committed by Scott Lahteine
parent 57bd04b6ce
commit f32e19e1c6
6 changed files with 90 additions and 71 deletions
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15
Marlin/src/HAL/shared/Delay.h
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@ -92,6 +92,12 @@ void calibrate_delay_loop();
#define DELAY_CYCLES(X) do { SmartDelay<IS_CONSTEXPR(X), IS_CONSTEXPR(X) ? X : 0> _smrtdly_X(X); } while(0)
#if GCC_VERSION <= 70000
#define DELAY_CYCLES_VAR(X) DelayCycleFnc(X)
#else
#define DELAY_CYCLES_VAR DELAY_CYCLES
#endif
// For delay in microseconds, no smart delay selection is required, directly call the delay function
// Teensy compiler is too old and does not accept smart delay compile-time / run-time selection correctly
#define DELAY_US(x) DelayCycleFnc((x) * ((F_CPU) / 1000000UL))
@ -200,9 +206,12 @@ void calibrate_delay_loop();
#endif
#if ENABLED(DELAY_NS_ROUND_DOWN)
#define DELAY_NS(x) DELAY_CYCLES((x) * ((F_CPU) / 1000000UL) / 1000UL) // floor
#define _NS_TO_CYCLES(x) ( (x) * ((F_CPU) / 1000000UL) / 1000UL) // floor
#elif ENABLED(DELAY_NS_ROUND_CLOSEST)
#define DELAY_NS(x) DELAY_CYCLES(((x) * ((F_CPU) / 1000000UL) + 500) / 1000UL) // round
#define _NS_TO_CYCLES(x) (((x) * ((F_CPU) / 1000000UL) + 500) / 1000UL) // round
#else
#define DELAY_NS(x) DELAY_CYCLES(((x) * ((F_CPU) / 1000000UL) + 999) / 1000UL) // "ceil"
#define _NS_TO_CYCLES(x) (((x) * ((F_CPU) / 1000000UL) + 999) / 1000UL) // "ceil"
#endif
#define DELAY_NS(x) DELAY_CYCLES(_NS_TO_CYCLES(x))
#define DELAY_NS_VAR(x) DELAY_CYCLES_VAR(_NS_TO_CYCLES(x))

2
Marlin/src/HAL/shared/Marduino.h
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@ -39,7 +39,7 @@
#define DISABLED(V...) DO(DIS,&&,V)
#undef _BV
#define _BV(b) (1UL << (b))
#define _BV(b) (1 << (b))
#ifndef SBI
#define SBI(A,B) (A |= _BV(B))
#endif

125
Marlin/src/libs/MAX31865.cpp
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@ -48,20 +48,17 @@
#if HAS_MAX31865 && !USE_ADAFRUIT_MAX31865
//#include <SoftwareSPI.h> // TODO: switch to SPIclass/SoftSPI
#include "MAX31865.h"
#ifdef TARGET_LPC1768
#include <SoftwareSPI.h>
#endif
// The maximum speed the MAX31865 can do is 5 MHz
SPISettings MAX31865::spiConfig = SPISettings(
#if defined(TARGET_LPC1768)
SPI_QUARTER_SPEED
#elif defined(ARDUINO_ARCH_STM32)
SPI_CLOCK_DIV4
#else
500000
#endif
, MSBFIRST
, SPI_MODE_1 // CPOL0 CPHA1
TERN(TARGET_LPC1768, SPI_QUARTER_SPEED, TERN(ARDUINO_ARCH_STM32, SPI_CLOCK_DIV4, 500000)),
MSBFIRST,
SPI_MODE1 // CPOL0 CPHA1
);
#ifndef LARGE_PINMAP
@ -93,7 +90,7 @@ SPISettings MAX31865::spiConfig = SPISettings(
_sclk = _miso = _mosi = -1;
}
#else
#else // LARGE_PINMAP
/**
* Create the interface object using software (bitbang) SPI for PIN values
@ -106,9 +103,7 @@ SPISettings MAX31865::spiConfig = SPISettings(
* @param spi_clk the SPI clock pin to use
* @param pin_mapping set to 1 for positive pin values
*/
MAX31865::MAX31865(uint32_t spi_cs, uint32_t spi_mosi,
uint32_t spi_miso, uint32_t spi_clk,
uint8_t pin_mapping) {
MAX31865::MAX31865(uint32_t spi_cs, uint32_t spi_mosi, uint32_t spi_miso, uint32_t spi_clk, uint8_t pin_mapping) {
_cs = spi_cs;
_mosi = spi_mosi;
_miso = spi_miso;
@ -130,14 +125,12 @@ SPISettings MAX31865::spiConfig = SPISettings(
#endif // LARGE_PINMAP
/**
*
* Instance & Class methods
*
*/
/**
* Initialize the SPI interface and set the number of RTD wires used
*
@ -152,22 +145,13 @@ void MAX31865::begin(max31865_numwires_t wires, float zero, float ref) {
OUT_WRITE(_cs, HIGH);
if (_sclk != TERN(LARGE_PINMAP, -1UL, -1)) {
// Define pin modes for Software SPI
#ifdef MAX31865_DEBUG
SERIAL_ECHOLN("Initializing MAX31865 Software SPI");
#endif
OUT_WRITE(_sclk, LOW);
SET_OUTPUT(_mosi);
SET_INPUT(_miso);
softSpiBegin(SPI_QUARTER_SPEED); // Define pin modes for Software SPI
}
else {
// Start and configure hardware SPI
#ifdef MAX31865_DEBUG
SERIAL_ECHOLN("Initializing MAX31865 Hardware SPI");
SERIAL_ECHOLNPGM("Initializing MAX31865 Hardware SPI");
#endif
SPI.begin();
SPI.begin(); // Start and configure hardware SPI
}
setWires(wires);
@ -176,25 +160,15 @@ void MAX31865::begin(max31865_numwires_t wires, float zero, float ref) {
clearFault();
#ifdef MAX31865_DEBUG_SPI
#ifndef LARGE_PINMAP
SERIAL_ECHOLNPGM(
"Regular begin call with _cs: ", _cs,
" _miso: ", _miso,
" _sclk: ", _sclk,
" _mosi: ", _mosi
);
#else
SERIAL_ECHOLNPGM(
"LARGE_PINMAP begin call with _cs: ", _cs,
" _miso: ", _miso,
" _sclk: ", _sclk,
" _mosi: ", _mosi
);
#endif // LARGE_PINMAP
SERIAL_ECHOLNPGM("config: ", readRegister8(MAX31856_CONFIG_REG));
SERIAL_EOL();
#endif // MAX31865_DEBUG_SPI
SERIAL_ECHOLNPGM(
TERN(LARGE_PINMAP, "LARGE_PINMAP", "Regular")
" begin call with _cs: ", _cs,
" _miso: ", _miso,
" _sclk: ", _sclk,
" _mosi: ", _mosi,
" config: ", readRegister8(MAX31856_CONFIG_REG)
);
#endif
}
/**
@ -371,7 +345,6 @@ float MAX31865::temperature(float Rrtd) {
// private:
//
/**
* Set a value in the configuration register.
*
@ -432,10 +405,15 @@ void MAX31865::readRegisterN(uint8_t addr, uint8_t buffer[], uint8_t n) {
WRITE(_sclk, LOW);
WRITE(_cs, LOW);
spixfer(addr);
#ifdef TARGET_LPC1768
DELAY_CYCLES(_spi_speed);
#endif
spiTransfer(addr);
while (n--) {
buffer[0] = spixfer(0xFF);
buffer[0] = spiTransfer(0xFF);
#ifdef MAX31865_DEBUG_SPI
SERIAL_ECHOLNPGM("buffer read ", n, " data: ", buffer[0]);
#endif
@ -462,8 +440,12 @@ void MAX31865::writeRegister8(uint8_t addr, uint8_t data) {
WRITE(_cs, LOW);
spixfer(addr | 0x80); // make sure top bit is set
spixfer(data);
#ifdef TARGET_LPC1768
DELAY_CYCLES(_spi_speed);
#endif
spiTransfer(addr | 0x80); // make sure top bit is set
spiTransfer(data);
if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
SPI.endTransaction();
@ -480,21 +462,38 @@ void MAX31865::writeRegister8(uint8_t addr, uint8_t data) {
* @param x an 8-bit chunk of data to write
* @return the 8-bit response
*/
uint8_t MAX31865::spixfer(uint8_t x) {
uint8_t MAX31865::spiTransfer(uint8_t x) {
if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
return SPI.transfer(x);
uint8_t reply = 0;
for (int i = 7; i >= 0; i--) {
reply <<= 1;
WRITE(_sclk, HIGH);
WRITE(_mosi, x & (1 << i));
WRITE(_sclk, LOW);
if (READ(_miso))
reply |= 1;
}
#ifdef TARGET_LPC1768
return swSpiTransfer(x, _spi_speed, _sclk, _miso, _mosi);
#else
uint8_t reply = 0;
for (int i = 7; i >= 0; i--) {
WRITE(_sclk, HIGH); DELAY_NS_VAR(_spi_delay);
reply <<= 1;
WRITE(_mosi, x & _BV(i)); DELAY_NS_VAR(_spi_delay);
if (READ(_miso)) reply |= 1;
WRITE(_sclk, LOW); DELAY_NS_VAR(_spi_delay);
}
return reply;
#endif
}
return reply;
void MAX31865::softSpiBegin(const uint8_t spi_speed) {
#ifdef MAX31865_DEBUG
SERIAL_ECHOLNPGM("Initializing MAX31865 Software SPI");
#endif
#ifdef TARGET_LPC1768
swSpiBegin(_sclk, _miso, _mosi);
_spi_speed = swSpiInit(spi_speed, _sclk, _mosi);
#else
_spi_delay = (100UL << spi_speed) / 3; // Calculate delay in ns. Top speed is ~10MHz, or 100ns delay between bits.
OUT_WRITE(_sclk, LOW);
SET_OUTPUT(_mosi);
SET_INPUT(_miso);
#endif
}
#endif // HAS_MAX31865 && !USE_ADAFRUIT_MAX31865

11
Marlin/src/libs/MAX31865.h
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@ -90,6 +90,13 @@ private:
static SPISettings spiConfig;
TERN(LARGE_PINMAP, uint32_t, uint8_t) _sclk, _miso, _mosi, _cs;
#ifdef TARGET_LPC1768
uint8_t _spi_speed;
#else
uint16_t _spi_delay;
#endif
float Rzero, Rref;
void setConfig(uint8_t config, bool enable);
@ -99,7 +106,9 @@ private:
uint16_t readRegister16(uint8_t addr);
void writeRegister8(uint8_t addr, uint8_t reg);
uint8_t spixfer(uint8_t addr);
uint8_t spiTransfer(uint8_t addr);
void softSpiBegin(const uint8_t spi_speed);
public:
#ifdef LARGE_PINMAP

3
buildroot/tests/LPC1769
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@ -14,11 +14,12 @@ exec_test $1 $2 "Azteeg X5GT Example Configuration" "$3"
restore_configs
opt_set MOTHERBOARD BOARD_SMOOTHIEBOARD \
EXTRUDERS 2 TEMP_SENSOR_1 -1 TEMP_SENSOR_BED 5 \
EXTRUDERS 2 TEMP_SENSOR_0 -5 TEMP_SENSOR_1 -1 TEMP_SENSOR_BED 5 TEMP_0_CS_PIN P1_29 \
GRID_MAX_POINTS_X 16 \
NOZZLE_CLEAN_START_POINT "{ { 10, 10, 3 }, { 10, 10, 3 } }" \
NOZZLE_CLEAN_END_POINT "{ { 10, 20, 3 }, { 10, 20, 3 } }"
opt_enable TFTGLCD_PANEL_SPI SDSUPPORT ADAPTIVE_FAN_SLOWING NO_FAN_SLOWING_IN_PID_TUNING \
MAX31865_SENSOR_OHMS_0 MAX31865_CALIBRATION_OHMS_0 \
FIX_MOUNTED_PROBE AUTO_BED_LEVELING_BILINEAR G29_RETRY_AND_RECOVER Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET LEVEL_CORNERS_USE_PROBE LEVEL_CORNERS_VERIFY_RAISED \
PRINTCOUNTER NOZZLE_PARK_FEATURE NOZZLE_CLEAN_FEATURE SLOW_PWM_HEATERS PIDTEMPBED EEPROM_SETTINGS INCH_MODE_SUPPORT TEMPERATURE_UNITS_SUPPORT \

5
buildroot/tests/teensy41
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@ -15,12 +15,13 @@ exec_test $1 $2 "Teensy4.1 with default config" "$3"
#
restore_configs
opt_set MOTHERBOARD BOARD_TEENSY41 \
EXTRUDERS 2 TEMP_SENSOR_0 1 TEMP_SENSOR_1 5 TEMP_SENSOR_BED 1 \
EXTRUDERS 2 TEMP_SENSOR_0 -5 TEMP_SENSOR_1 5 TEMP_SENSOR_BED 1 TEMP_0_CS_PIN 23 \
I2C_SLAVE_ADDRESS 63 \
GRID_MAX_POINTS_X 16 \
NOZZLE_CLEAN_START_POINT "{ { 10, 10, 3 }, { 10, 10, 3 } }" \
NOZZLE_CLEAN_END_POINT "{ { 10, 20, 3 }, { 10, 20, 3 } }"
opt_enable EXTENSIBLE_UI LCD_INFO_MENU SDSUPPORT SDCARD_SORT_ALPHA \
opt_enable MAX31865_SENSOR_OHMS_0 MAX31865_CALIBRATION_OHMS_0 \
EXTENSIBLE_UI LCD_INFO_MENU SDSUPPORT SDCARD_SORT_ALPHA \
FILAMENT_LCD_DISPLAY CALIBRATION_GCODE BAUD_RATE_GCODE \
FIX_MOUNTED_PROBE Z_SAFE_HOMING AUTO_BED_LEVELING_BILINEAR Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET \

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