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.
65 строки
912 Б
Go
65 строки
912 Б
Go
// +build pca10056
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package machine
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const HasLowFrequencyCrystal = true
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// LEDs on the pca10056
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const (
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LED Pin = LED1
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LED1 Pin = 13
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LED2 Pin = 14
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LED3 Pin = 15
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LED4 Pin = 16
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)
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// Buttons on the pca10056
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const (
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BUTTON Pin = BUTTON1
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BUTTON1 Pin = 11
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BUTTON2 Pin = 12
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BUTTON3 Pin = 24
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BUTTON4 Pin = 25
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)
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var Serial = UART0
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// UART pins
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const (
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UART_TX_PIN Pin = 6
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UART_RX_PIN Pin = 8
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)
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// ADC pins
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const (
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ADC0 Pin = 3
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ADC1 Pin = 4
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ADC2 Pin = 28
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ADC3 Pin = 29
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ADC4 Pin = 30
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ADC5 Pin = 31
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)
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// I2C pins
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const (
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SDA_PIN Pin = 26 // P0.26
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SCL_PIN Pin = 27 // P0.27
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)
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// SPI pins
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const (
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SPI0_SCK_PIN Pin = 47 // P1.15
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SPI0_SDO_PIN Pin = 45 // P1.13
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SPI0_SDI_PIN Pin = 46 // P1.14
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "Nordic nRF52840DK (PCA10056)"
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usb_STRING_MANUFACTURER = "Nordic Semiconductor"
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)
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var (
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usb_VID uint16 = 0x239A
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usb_PID uint16 = 0x8029
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)
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