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Wire: if we are reading only one byte, do not send empty read command

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This commit is contained in:
me-no-dev 2016-12-14 18:43:32 +02:00
parent 917a4fd6f0
commit 04e0902ca6
1 changed files with 11 additions and 3 deletions
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14
cores/esp32/esp32-hal-i2c.c
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@ -267,9 +267,17 @@ i2c_err_t i2cRead(i2c_t * i2c, uint16_t address, bool addr_10bit, uint8_t * data
i2cResetFiFo(i2c); i2cResetFiFo(i2c);
} }
i2cSetCmd(i2c, cmdIdx++, I2C_CMD_READ, willRead, false, false, false); if(willRead){
if((len - willRead) > 1) { i2cSetCmd(i2c, cmdIdx++, I2C_CMD_READ, willRead, false, false, false);
i2cSetCmd(i2c, cmdIdx++, I2C_CMD_END, 0, false, false, false); if((len - willRead) > 1) {
i2cSetCmd(i2c, cmdIdx++, I2C_CMD_END, 0, false, false, false);
} else {
willRead++;
i2cSetCmd(i2c, cmdIdx++, I2C_CMD_READ, 1, true, false, false);
if(sendStop) {
i2cSetCmd(i2c, cmdIdx++, I2C_CMD_STOP, 0, false, false, false);
}
}
} else { } else {
willRead++; willRead++;
i2cSetCmd(i2c, cmdIdx++, I2C_CMD_READ, 1, true, false, false); i2cSetCmd(i2c, cmdIdx++, I2C_CMD_READ, 1, true, false, false);