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machine/esp32c3: handle defaults for I2C configuration

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Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram
2023-11-28 15:06:56 +01:00
committed by Ron Evans
parent 94459cefe5
commit f91b6ad0df
1 changed files with 21 additions and 7 deletions
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src/machine/machine_esp32c3.go
+15 -1
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@@ -626,6 +626,16 @@ const (
) )
func (i2c *I2C) Configure(config I2CConfig) error { func (i2c *I2C) Configure(config I2CConfig) error {
if config.Frequency == 0 {
config.Frequency = 400 * KHz
}
if config.SCL == 0 {
config.SCL = SCL_PIN
}
if config.SDA == 0 {
config.SDA = SDA_PIN
}
i2c.initClock(config) i2c.initClock(config)
i2c.initNoiseFilter() i2c.initNoiseFilter()
i2c.initPins(config) i2c.initPins(config)
@@ -907,7 +917,7 @@ func (i2c *I2C) transmit(addr uint16, cmd []i2cCommand, timeoutMS int) error {
// bytes and stores them in r, and generates a stop condition on the bus. // bytes and stores them in r, and generates a stop condition on the bus.
func (i2c *I2C) Tx(addr uint16, w, r []byte) (err error) { func (i2c *I2C) Tx(addr uint16, w, r []byte) (err error) {
// timeout in microseconds. // timeout in microseconds.
const timeout = 100 * 1000 // 40ms is a reasonable time for a real-time system. const timeout = 40 // 40ms is a reasonable time for a real-time system.
cmd := make([]i2cCommand, 0, 8) cmd := make([]i2cCommand, 0, 8)
cmd = append(cmd, i2cCommand{cmd: i2cCMD_RSTART}) cmd = append(cmd, i2cCommand{cmd: i2cCMD_RSTART})
@@ -921,3 +931,7 @@ func (i2c *I2C) Tx(addr uint16, w, r []byte) (err error) {
return i2c.transmit(addr, cmd, timeout) return i2c.transmit(addr, cmd, timeout)
} }
func (i2c *I2C) SetBaudRate(br uint32) error {
return nil
}