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https://github.com/tinygo-org/tinygo.git
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Ayke van Laethem
b67351babe
Previously, the machine.UART0 object had two meanings:
- it was the first UART on the chip
- it was the default output for println
These two meanings conflict, and resulted in workarounds like:
- Defining UART0 to refer to the USB-CDC interface (atsamd21,
atsamd51, nrf52840), even though that clearly isn't an UART.
- Defining NRF_UART0 to avoid a conflict with UART0 (which was
redefined as a USB-CDC interface).
- Defining aliases like UART0 = UART1, which refer to the same
hardware peripheral (stm32).
This commit changes this to use a new machine.Serial object for the
default serial port. It might refer to the first or second UART
depending on the board, or even to the USB-CDC interface. Also, UART0
now really refers to the first UART on the chip, no longer to a USB-CDC
interface.
The changes in the runtime package are all just search+replace. The
changes in the machine package are a mixture of search+replace and
manual modifications.
This commit does not affect binary size, in fact it doesn't affect the
resulting binary at all.
91 lines
1.1 KiB
Go
91 lines
1.1 KiB
Go
// +build esp32_coreboard_v2
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package machine
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// Built-in LED on some ESP32 boards.
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const LED = IO2
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const (
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CLK Pin = 6
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CMD Pin = 11
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IO0 Pin = 0
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IO1 Pin = 1
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IO10 Pin = 10
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IO16 Pin = 16
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IO17 Pin = 17
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IO18 Pin = 18
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IO19 Pin = 19
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IO2 Pin = 2
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IO21 Pin = 21
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IO22 Pin = 22
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IO23 Pin = 23
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IO25 Pin = 25
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IO26 Pin = 26
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IO27 Pin = 27
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IO3 Pin = 3
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IO32 Pin = 32
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IO33 Pin = 33
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IO34 Pin = 34
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IO35 Pin = 35
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IO36 Pin = 36
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IO39 Pin = 39
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IO4 Pin = 4
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IO5 Pin = 5
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IO9 Pin = 9
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RXD Pin = 3
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SD0 Pin = 7
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SD1 Pin = 8
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SD2 Pin = 9
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SD3 Pin = 10
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SVN Pin = 39
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SVP Pin = 36
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TCK Pin = 13
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TD0 Pin = 15
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TDI Pin = 12
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TMS Pin = 14
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TXD Pin = 1
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)
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// SPI pins
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const (
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SPI0_SCK_PIN = IO18
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SPI0_SDO_PIN = IO23
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SPI0_SDI_PIN = IO19
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SPI0_CS0_PIN = IO5
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)
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// I2C pins
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const (
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SDA_PIN = IO21
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SCL_PIN = IO22
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)
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// ADC pins
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const (
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ADC0 Pin = IO34
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ADC1 Pin = IO35
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ADC2 Pin = IO36
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ADC3 Pin = IO39
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)
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var Serial = UART0
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// UART0 pins
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const (
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UART_TX_PIN = IO1
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UART_RX_PIN = IO3
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)
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// UART1 pins
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const (
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UART1_TX_PIN = IO9
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UART1_RX_PIN = IO10
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)
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// PWM pins
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const (
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PWM0_PIN Pin = IO2
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PWM1_PIN Pin = IO0
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PWM2_PIN Pin = IO4
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)
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