diff options
Diffstat (limited to 'src/machine/machine_stm32l0.go')
| -rw-r--r-- | src/machine/machine_stm32l0.go | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/machine/machine_stm32l0.go b/src/machine/machine_stm32l0.go index 844cfccb4..e3fcefb57 100644 --- a/src/machine/machine_stm32l0.go +++ b/src/machine/machine_stm32l0.go @@ -298,9 +298,20 @@ func (spi SPI) configurePins(config SPIConfig) { //---------- I2C related types and 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 80MHz PCLK1. + // for 16MHz PCLK1. // TODO: Do calculations based on PCLK1 - return 0x00303D5B + switch br { + case 10 * KHz: + return 0x40003EFF + case 100 * KHz: + return 0x00303D5B + case 400 * KHz: + return 0x0010061A + case 500 * KHz: + return 0x00000117 + default: + return 0 + } } |