stm32: separate altfunc selection for UART Tx/Rx

This is needed for stm32l432 nucleo with different altfun for tx and rx
This commit is contained in:
Kenneth Bell
2021-03-07 10:55:50 -08:00
committed by Ron Evans
parent c522569378
commit dc981ce509
9 changed files with 37 additions and 30 deletions
+12 -9
View File
@@ -120,19 +120,22 @@ const (
var ( var (
UART1 = UART{ UART1 = UART{
Buffer: NewRingBuffer(), Buffer: NewRingBuffer(),
Bus: stm32.USART3, Bus: stm32.USART3,
AltFuncSelector: AF7_USART1_2_3, TxAltFuncSelector: AF7_USART1_2_3,
RxAltFuncSelector: AF7_USART1_2_3,
} }
UART2 = UART{ UART2 = UART{
Buffer: NewRingBuffer(), Buffer: NewRingBuffer(),
Bus: stm32.USART6, Bus: stm32.USART6,
AltFuncSelector: AF8_USART4_5_6, TxAltFuncSelector: AF8_USART4_5_6,
RxAltFuncSelector: AF8_USART4_5_6,
} }
UART3 = UART{ UART3 = UART{
Buffer: NewRingBuffer(), Buffer: NewRingBuffer(),
Bus: stm32.USART1, Bus: stm32.USART1,
AltFuncSelector: AF7_USART1_2_3, TxAltFuncSelector: AF7_USART1_2_3,
RxAltFuncSelector: AF7_USART1_2_3,
} }
UART0 = UART1 UART0 = UART1
) )
+4 -3
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@@ -33,9 +33,10 @@ var (
// debugger to be exposed as virtual COM port over USB on Nucleo boards. // debugger to be exposed as virtual COM port over USB on Nucleo boards.
// Both UART0 and UART1 refer to USART2. // Both UART0 and UART1 refer to USART2.
UART0 = UART{ UART0 = UART{
Buffer: NewRingBuffer(), Buffer: NewRingBuffer(),
Bus: stm32.USART3, Bus: stm32.USART3,
AltFuncSelector: UART_ALT_FN, TxAltFuncSelector: UART_ALT_FN,
RxAltFuncSelector: UART_ALT_FN,
} }
UART1 = &UART0 UART1 = &UART0
) )
+4 -3
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@@ -33,9 +33,10 @@ var (
// debugger to be exposed as virtual COM port over USB on Nucleo boards. // debugger to be exposed as virtual COM port over USB on Nucleo boards.
// Both UART0 and UART1 refer to LPUART1. // Both UART0 and UART1 refer to LPUART1.
UART0 = UART{ UART0 = UART{
Buffer: NewRingBuffer(), Buffer: NewRingBuffer(),
Bus: stm32.LPUART1, Bus: stm32.LPUART1,
AltFuncSelector: UART_ALT_FN, TxAltFuncSelector: UART_ALT_FN,
RxAltFuncSelector: UART_ALT_FN,
} }
UART1 = &UART0 UART1 = &UART0
) )
+4 -3
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@@ -28,9 +28,10 @@ const (
var ( var (
UART0 = UART{ UART0 = UART{
Buffer: NewRingBuffer(), Buffer: NewRingBuffer(),
Bus: stm32.USART2, Bus: stm32.USART2,
AltFuncSelector: AF7_USART1_2_3, TxAltFuncSelector: AF7_USART1_2_3,
RxAltFuncSelector: AF7_USART1_2_3,
} }
UART1 = &UART0 UART1 = &UART0
) )
+5 -4
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@@ -13,10 +13,11 @@ import (
// UART representation // UART representation
type UART struct { type UART struct {
Buffer *RingBuffer Buffer *RingBuffer
Bus *stm32.USART_Type Bus *stm32.USART_Type
Interrupt interrupt.Interrupt Interrupt interrupt.Interrupt
AltFuncSelector uint8 TxAltFuncSelector uint8
RxAltFuncSelector uint8
// Registers specific to the chip // Registers specific to the chip
rxReg *volatile.Register32 rxReg *volatile.Register32
+2 -2
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@@ -37,8 +37,8 @@ const (
func (uart *UART) configurePins(config UARTConfig) { func (uart *UART) configurePins(config UARTConfig) {
// enable the alternate functions on the TX and RX pins // enable the alternate functions on the TX and RX pins
config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.AltFuncSelector) config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.TxAltFuncSelector)
config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.AltFuncSelector) config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.RxAltFuncSelector)
} }
func (uart *UART) getBaudRateDivisor(baudRate uint32) uint32 { func (uart *UART) getBaudRateDivisor(baudRate uint32) uint32 {
+2 -2
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@@ -37,8 +37,8 @@ const (
// Configure the UART. // 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 // enable the alternate functions on the TX and RX pins
config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.AltFuncSelector) config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.TxAltFuncSelector)
config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.AltFuncSelector) config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.RxAltFuncSelector)
} }
// UART baudrate calc based on the bus and clockspeed // UART baudrate calc based on the bus and clockspeed
+2 -2
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@@ -17,8 +17,8 @@ func CPUFrequency() uint32 {
// Configure the UART. // 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 // enable the alternate functions on the TX and RX pins
config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.AltFuncSelector) config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.TxAltFuncSelector)
config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.AltFuncSelector) config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.RxAltFuncSelector)
} }
// UART baudrate calc based on the bus and clockspeed // UART baudrate calc based on the bus and clockspeed
+2 -2
View File
@@ -22,8 +22,8 @@ func (uart *UART) configurePins(config UARTConfig) {
} }
// enable the alternate functions on the TX and RX pins // enable the alternate functions on the TX and RX pins
config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.AltFuncSelector) config.TX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTTX}, uart.TxAltFuncSelector)
config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.AltFuncSelector) config.RX.ConfigureAltFunc(PinConfig{Mode: PinModeUARTRX}, uart.RxAltFuncSelector)
} }
// UART baudrate calc based on the bus and clockspeed // UART baudrate calc based on the bus and clockspeed