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add I2C_RX_FIFO_OVF_INT_ST handling to i2c_isr_handler_default #4342

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Merged
merged 1 commit into from
Oct 1, 2020
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add I2C_RX_FIFO_OVF_INT_ST handling to i2c_isr_handler_default #4342

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8 changes: 8 additions & 0 deletions cores/esp32/esp32-hal-i2c.c
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Original file line number Diff line number Diff line change
Expand Up @@ -945,6 +945,14 @@ static void IRAM_ATTR i2c_isr_handler_default(void* arg)
activeInt &=~I2C_RXFIFO_FULL_INT_ST;
}

if(activeInt & I2C_RXFIFO_OVF_INT_ST) {
emptyRxFifo(p_i2c);
p_i2c->dev->int_clr.rx_fifo_full=1;
p_i2c->dev->int_ena.rx_fifo_full=1; //why?

activeInt &=~I2C_RXFIFO_OVF_INT_ST;
}

if (activeInt & I2C_ACK_ERR_INT_ST_M) {//fatal error, abort i2c service
if (p_i2c->mode == I2C_MASTER) {
i2c_update_error_byte_cnt(p_i2c); // calc which byte caused ack Error, check if address or data
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