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🧑‍💻 Fix GD32 EEPROM timings (#27846)

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B 2025-05-09 09:58:25 -07:00 • committed by GitHub
parent 94e2558e6c
commit b22df8b189
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GPG key ID: B5690EEEBB952194
2 changed files with 79 additions and 10 deletions
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2
Marlin/src/HAL/GD32_MFL/eeprom/eeprom_bl24cxx.cpp
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@ -62,7 +62,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
// so only write bytes that have changed!
if (v != eeprom_read_byte(p)) {
eeprom_write_byte(p, v);
if (++written & 0x7F) delay(4); else safe_delay(4);
if (++written & 0x7F) delay(2); else safe_delay(2);
if (eeprom_read_byte(p) != v) {
SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
return true;

87
Marlin/src/libs/BL24CXX.cpp
View file

@ -44,6 +44,10 @@
#define EEPROM_DEVICE_ADDRESS (0x50 << 1)
#endif
#ifdef ARDUINO_ARCH_MFL
#define EXTRA_EEPROM_DELAY
#endif
// IO direction setting
#ifdef __STM32F1__
#define SDA_IN() do{ PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH &= 0XFFFF0FFF; PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH |= 8 << 12; }while(0)
@ -60,6 +64,14 @@
#define IIC_SDA_1() WRITE(IIC_EEPROM_SDA, HIGH)
#define READ_SDA() READ(IIC_EEPROM_SDA)
#ifdef EXTRA_EEPROM_DELAY
#define EXTRA_DELAY 1
#define EXTRA_DELAY_LOW 4 // SCL low period (tLOW)
#else
#define EXTRA_DELAY 0
#define EXTRA_DELAY_LOW 0
#endif
//
// Simple IIC interface via libmaple
//
@ -70,28 +82,51 @@ void IIC::init() {
SET_OUTPUT(IIC_EEPROM_SCL);
IIC_SCL_1();
IIC_SDA_1();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY); // Ensure bus free time
#endif
}
// Generate IIC start signal
void IIC::start() {
SDA_OUT(); // SDA line output
IIC_SDA_1();
#ifdef EXTRA_EEPROM_DELAY
delay_us(4 + EXTRA_DELAY); // Setup time before SCL high
#endif
IIC_SCL_1();
delay_us(4);
delay_us(4 + EXTRA_DELAY);
IIC_SDA_0(); // START:when CLK is high, DATA change from high to low
delay_us(4);
delay_us(4 + EXTRA_DELAY);
IIC_SCL_0(); // Clamp the I2C bus, ready to send or receive data
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY_LOW); // Ensure SCL low period
#endif
}
// Generate IIC stop signal
void IIC::stop() {
SDA_OUT(); // SDA line output
IIC_SCL_0();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY_LOW); // Ensure SCL low period
#endif
IIC_SDA_0(); // STOP:when CLK is high DATA change from low to high
delay_us(4);
delay_us(4 + EXTRA_DELAY);
IIC_SCL_1();
#ifdef EXTRA_EEPROM_DELAY
delay_us(4 + EXTRA_DELAY); // Setup time with SCL high
#endif
IIC_SDA_1(); // Send I2C bus end signal
delay_us(4);
delay_us(4 + EXTRA_DELAY);
}
// Wait for the response signal to arrive
@ -100,8 +135,9 @@ void IIC::stop() {
uint8_t IIC::wait_ack() {
uint8_t ucErrTime = 0;
SDA_IN(); // SDA is set as input
IIC_SDA_1(); delay_us(1);
IIC_SCL_1(); delay_us(1);
IIC_SDA_1(); delay_us(1 + EXTRA_DELAY);
IIC_SCL_1(); delay_us(1 + EXTRA_DELAY);
while (READ_SDA()) {
if (++ucErrTime > 250) {
stop();
@ -109,29 +145,52 @@ uint8_t IIC::wait_ack() {
}
}
IIC_SCL_0(); // Clock output 0
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY); // Hold time after SCL falls
#endif
return 0;
}
// Generate ACK response
void IIC::ack() {
IIC_SCL_0();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY_LOW); // Ensure SCL low period
#endif
SDA_OUT();
IIC_SDA_0();
delay_us(2);
IIC_SCL_1();
delay_us(2);
delay_us(2 + EXTRA_DELAY);
IIC_SCL_0();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY); // Data hold time
#endif
}
// No ACK response
void IIC::nAck() {
IIC_SCL_0();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY_LOW); // Ensure SCL low period
#endif
SDA_OUT();
IIC_SDA_1();
delay_us(2);
IIC_SCL_1();
delay_us(2);
delay_us(2 + EXTRA_DELAY);
IIC_SCL_0();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY); // Data hold time
#endif
}
// Send one IIC byte
@ -141,13 +200,18 @@ void IIC::nAck() {
void IIC::send_byte(uint8_t txd) {
SDA_OUT();
IIC_SCL_0(); // Pull down the clock to start data transmission
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY_LOW); // Ensure SCL low period
#endif
for (uint8_t t = 0; t < 8; ++t) {
// IIC_SDA = (txd & 0x80) >> 7;
if (txd & 0x80) IIC_SDA_1(); else IIC_SDA_0();
txd <<= 1;
delay_us(2); // All three delays are necessary for TEA5767
IIC_SCL_1();
delay_us(2);
delay_us(2 + EXTRA_DELAY);
IIC_SCL_0();
delay_us(2);
}
@ -161,6 +225,11 @@ uint8_t IIC::read_byte(unsigned char ack_chr) {
IIC_SCL_0();
delay_us(2);
IIC_SCL_1();
#ifdef EXTRA_EEPROM_DELAY
delay_us(EXTRA_DELAY); // Delay before reading to allow EEPROM to output data
#endif
receive <<= 1;
if (READ_SDA()) receive++;
delay_us(1);