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https://github.com/tinygo-org/tinygo.git
synced 2026-08-09 13:33:39 +00:00
Ayke van Laethem
96e863f0f3
This can be very useful for some purposes:
* It makes it possible to disable the UART in cases where it is not
needed or needs to be disabled to conserve power.
* It makes it possible to disable the serial output to reduce code
size, which may be important for some chips. Sometimes, a few kB can
be saved this way.
* It makes it possible to override the default, for example you might
want to use an actual UART to debug the USB-CDC implementation.
It also lowers the dependency on having machine.Serial defined, which is
often not defined when targeting a chip. Eventually, we might want to
make it possible to write `-target=nrf52` or `-target=atmega328p` for
example to target the chip itself with no board specific assumptions.
The defaults don't change. I checked this by running `make smoketest`
before and after and comparing the results.
98 lines
1.6 KiB
Go
98 lines
1.6 KiB
Go
// +build lgt92
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package machine
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import (
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"device/stm32"
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"runtime/interrupt"
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)
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const (
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LED1 = PA12
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LED2 = PA8
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LED3 = PA11
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LED_RED = LED1
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LED_BLUE = LED2
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LED_GREEN = LED3
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// Default led
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LED = LED1
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BUTTON = PB14
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// LG GPS module
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GPS_STANDBY_PIN = PB3
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GPS_RESET_PIN = PB4
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GPS_POWER_PIN = PB5
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MEMS_ACCEL_CS = PE3
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MEMS_ACCEL_INT1 = PE0
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MEMS_ACCEL_INT2 = PE1
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// SPI
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SPI1_SCK_PIN = PA5
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SPI1_SDI_PIN = PA6
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SPI1_SDO_PIN = PA7
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SPI0_SCK_PIN = SPI1_SCK_PIN
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SPI0_SDI_PIN = SPI1_SDI_PIN
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SPI0_SDO_PIN = SPI1_SDO_PIN
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// LORA RFM95 Radio
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RFM95_DIO0_PIN = PC13
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// TinyGo UART is MCU LPUSART1
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UART_RX_PIN = PA13
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UART_TX_PIN = PA14
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// TinyGo UART1 is MCU USART1
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UART1_RX_PIN = PB6
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UART1_TX_PIN = PB7
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// MPU9250 Nine-Axis (Gyro + Accelerometer + Compass)
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I2C0_SCL_PIN = PA9
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I2C0_SDA_PIN = PA10
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)
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var DefaultUART = UART0
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var (
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// Console UART (LPUSART1)
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UART0 = &_UART0
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_UART0 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.LPUART1,
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TxAltFuncSelector: 6,
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RxAltFuncSelector: 6,
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}
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// Gps UART
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UART1 = &_UART1
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_UART1 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART1,
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TxAltFuncSelector: 0,
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RxAltFuncSelector: 0,
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}
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// MPU9250 Nine-Axis (Gyro + Accelerometer + Compass)
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I2C1 = &I2C{
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Bus: stm32.I2C1,
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AltFuncSelector: 6,
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}
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I2C0 = I2C1
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// SPI
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SPI0 = SPI{
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Bus: stm32.SPI1,
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}
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SPI1 = &SPI0
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)
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func init() {
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// Enable UARTs Interrupts
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UART0.Interrupt = interrupt.New(stm32.IRQ_AES_RNG_LPUART1, _UART0.handleInterrupt)
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UART1.Interrupt = interrupt.New(stm32.IRQ_USART1, _UART1.handleInterrupt)
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}
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