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Update esp32-hal-i2c.c

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wait for data to be latched and increase timeout in attempt to fix clock stretch issues
Connected issues:
http://esp32.com/viewtopic.php?f=19&t=632&p=2832#p2801
https://github.com/espressif/arduino-esp32/issues/81
https://github.com/espressif/arduino-esp32/issues/53
https://github.com/espressif/arduino-esp32/issues/11
This commit is contained in:
Me No Dev 2016-12-09 12:51:36 +02:00 committed by GitHub
parent 35e54f2a59
commit d1025b6b5d
1 changed files with 5 additions and 1 deletions
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6
cores/esp32/esp32-hal-i2c.c
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@ -172,9 +172,13 @@ i2c_err_t i2cWrite(i2c_t * i2c, uint16_t address, bool addr_10bit, uint8_t * dat
} }
} }
i = 0; i = 0;
uint32_t fifotail = 0;
while(i<dataSend) { while(i<dataSend) {
fifotail = i2c->dev->fifo_st.tx_fifo_end_addr;
i++; i++;
i2c->dev->fifo_data.data = data[index++]; i2c->dev->fifo_data.data = data[index++];
// Wait for FIFO to update
while(i2c->dev->fifo_st.tx_fifo_end_addr == fifotail) {};
} }
i2cSetCmd(i2c, 1, I2C_CMD_WRITE, willSend, false, false, true); i2cSetCmd(i2c, 1, I2C_CMD_WRITE, willSend, false, false, true);
dataLen -= willSend; dataLen -= willSend;
@ -389,7 +393,7 @@ i2c_t * i2cInit(uint8_t i2c_num, uint16_t slave_addr, bool addr_10bit_en)
i2c->dev->ctr.scl_force_out = 1 ; i2c->dev->ctr.scl_force_out = 1 ;
i2c->dev->ctr.clk_en = 1; i2c->dev->ctr.clk_en = 1;
i2c->dev->timeout.tout = 2000; i2c->dev->timeout.tout = 400000;//clocks max=1048575
i2c->dev->fifo_conf.nonfifo_en = 0; i2c->dev->fifo_conf.nonfifo_en = 0;
i2c->dev->slave_addr.val = 0; i2c->dev->slave_addr.val = 0;