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stm32/i2cslave: Account for slow addr_match callback.

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Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2025-07-29 00:19:24 +10:00
parent 2443878bd9
commit 78d16672e1
1 changed files with 3 additions and 0 deletions
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3
ports/stm32/i2cslave.c
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@ -94,6 +94,9 @@ void i2c_slave_irq_handler(i2c_slave_t *i2c) {
i2c->ISR = I2C_ISR_TXE;
i2c->ICR = I2C_ICR_ADDRCF;
i2c_slave_process_addr_match(i2c, (i2c->ISR >> I2C_ISR_DIR_Pos) & 1);
// Re-read ISR in case i2c_slave_process_addr_match() took some time
// to process and TXIS/RXNE was set in the meantime.
isr = i2c->ISR;
}
if (isr & I2C_ISR_TXIS) {
// This callback must call i2c_slave_write_byte.