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i2csoft: fix baudrate handling

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This commit is contained in:
sago35
2021-09-24 09:24:53 +09:00
committed by Ron Evans
parent bd42656644
commit a89a26112e
1 changed files with 4 additions and 4 deletions
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i2csoft/i2csoft.go
+4 -4
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@@ -33,7 +33,7 @@ func New(sclPin, sdaPin machine.Pin) *I2C {
return &I2C{ return &I2C{
scl: sclPin, scl: sclPin,
sda: sdaPin, sda: sdaPin,
baudrate: 100 * 1e3, baudrate: 100e3,
} }
} }
@@ -41,7 +41,7 @@ func New(sclPin, sdaPin machine.Pin) *I2C {
func (i2c *I2C) Configure(config I2CConfig) error { func (i2c *I2C) Configure(config I2CConfig) error {
// Default I2C bus speed is 100 kHz. // Default I2C bus speed is 100 kHz.
if config.Frequency != 0 { if config.Frequency != 0 {
i2c.baudrate = config.Frequency i2c.SetBaudRate(config.Frequency)
} }
// This exists for compatibility with machine.I2CConfig. SCL and SDA must // This exists for compatibility with machine.I2CConfig. SCL and SDA must
@@ -52,8 +52,6 @@ func (i2c *I2C) Configure(config I2CConfig) error {
i2c.sda = config.SDA i2c.sda = config.SDA
} }
i2c.SetBaudRate(config.Frequency)
// enable pins // enable pins
i2c.sda.High() i2c.sda.High()
i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput}) i2c.sda.Configure(machine.PinConfig{Mode: machine.PinOutput})
@@ -65,6 +63,8 @@ func (i2c *I2C) Configure(config I2CConfig) error {
// SetBaudRate sets the communication speed for the I2C. // SetBaudRate sets the communication speed for the I2C.
func (i2c *I2C) SetBaudRate(br uint32) { func (i2c *I2C) SetBaudRate(br uint32) {
// At this time, the value of i2c.baudrate is ignored because it is fixed
// at 100 kHz. SetBaudrate() is exist for compatibility with machine.I2C.
i2c.baudrate = br i2c.baudrate = br
} }