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machine: make machine.I2C0 and similar objects pointers

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This makes it possible to assign I2C objects (machine.I2C0,
machine.I2C1, etc.) without needing to take a pointer.

This is important especially in the future when I2C may be driven using
DMA and the machine.I2C type needs to store some state.
This commit is contained in:
Ayke van Laethem
2021-02-06 12:37:15 +01:00
committed by Ron Evans
parent 71bbe93ab2
commit 90b42799a2
41 changed files with 129 additions and 136 deletions
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src/machine/machine_stm32f7x2.go
+1 -1
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@@ -45,7 +45,7 @@ func (uart *UART) setRegisters() {
//---------- I2C related code
// Gets the value for TIMINGR register
func (i2c I2C) getFreqRange() uint32 {
func (i2c *I2C) getFreqRange() uint32 {
// This is a 'magic' value calculated by STM32CubeMX
// for 27MHz PCLK1 (216MHz CPU Freq / 8).
// TODO: Do calculations based on PCLK1