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machine/stm32: add i2c Frequency and SetBaudRate() function for boards that were missing implementation

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Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram
2024-05-06 19:29:11 +02:00
committed by Ron Evans
parent 72f30ca6ec
commit 7d6b667bba
8 changed files with 121 additions and 22 deletions
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src/machine/machine_stm32l5x2.go
+13 -2
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@@ -49,9 +49,20 @@ func (uart *UART) setRegisters() {
//---------- I2C related code
// Gets the value for TIMINGR register
func (i2c *I2C) getFreqRange() uint32 {
func (i2c *I2C) getFreqRange(br uint32) uint32 {
// This is a 'magic' value calculated by STM32CubeMX
// for 110MHz PCLK1.
// TODO: Do calculations based on PCLK1
return 0x40505681
switch br {
case 10 * KHz:
return 0x0 // does this even work? zero is weird here.
case 100 * KHz:
return 0x40505681
case 400 * KHz:
return 0x00A03AC8
case 500 * KHz:
return 0x005015B6
default:
return 0
}
}