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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.
89 lines
1.1 KiB
Go
89 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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// 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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