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machine: make UART objects pointer receivers

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This means that machine.UART0, machine.UART1, etc are of type
*machine.UART, not machine.UART. This makes them easier to pass around
and avoids surprises when they are passed around by value while they
should be passed around by reference.

There is a small code size impact in some cases, but it is relatively
minor.
This commit is contained in:
Ayke van Laethem
2021-05-13 12:32:12 +02:00
committed by Ron Evans
parent 7c949ad386
commit aa5b8d0df7
46 changed files with 246 additions and 179 deletions
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src/machine/machine_stm32l0.go
+2 -2
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@@ -144,14 +144,14 @@ func (p Pin) enableClock() {
//---------- UART related types and code
// Configure the UART.
func (uart UART) configurePins(config UARTConfig) {
func (uart *UART) configurePins(config UARTConfig) {
// enable the alternate functions on the TX and RX pins
config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.TxAltFuncSelector)
config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.RxAltFuncSelector)
}
// UART baudrate calc based on the bus and clockspeed
func (uart UART) getBaudRateDivisor(baudRate uint32) uint32 {
func (uart *UART) getBaudRateDivisor(baudRate uint32) uint32 {
var clock, rate uint32
switch uart.Bus {
case stm32.LPUART1: