machine/samd21/arduino-nano33: adds support for Arduino Nano33 IoT along with mapping to NINA-W102 WiFi chip.
Also adds DTR and RTS functions along with timeouts to USBCDC functions to prevent lockups. Signed-off-by: Ron Evans <ron@hybridgroup.com>
Этот коммит содержится в:
Ron Evans
Ayke
родитель
ffa38b183b
коммит
fc9188a298
8 изменённых файлов: 271 добавлений и 31 удалений
138
src/machine/board_arduino_nano33.go
Обычный файл
138
src/machine/board_arduino_nano33.go
Обычный файл
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@ -0,0 +1,138 @@
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// +build sam,atsamd21,arduino_nano33
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// This contains the pin mappings for the Arduino Nano33 IoT board.
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//
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// For more information, see: https://store.arduino.cc/nano-33-iot
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//
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package machine
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import "device/sam"
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// GPIO Pins
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const (
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RX0 Pin = PB23 // UART2 RX
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TX1 Pin = PB22 // UART2 TX
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D2 Pin = PB10 // PWM available
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D3 Pin = PB11 // PWM available
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D4 Pin = PA07
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D5 Pin = PA05 // PWM available
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D6 Pin = PA04 // PWM available
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D7 Pin = PA06
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D8 Pin = PA18
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D9 Pin = PA20 // PWM available
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D10 Pin = PA21 // PWM available
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D11 Pin = PA16 // PWM available
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D12 Pin = PA19 // PWM available
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D13 Pin = PA17
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)
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// Analog pins
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const (
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A0 Pin = PA02 // ADC/AIN[0]
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A1 Pin = PB02 // ADC/AIN[10]
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A2 Pin = PA11 // ADC/AIN[19]
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A3 Pin = PA10 // ADC/AIN[18]
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A4 Pin = PB08 // ADC/AIN[2], SCL: SERCOM2/PAD[1]
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A5 Pin = PB09 // ADC/AIN[3], SDA: SERCOM2/PAD[1]
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A6 Pin = PA09 // ADC/AIN[17]
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A7 Pin = PB03 // ADC/AIN[11]
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)
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const (
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LED = D13
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)
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// NINA-W102 Pins
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const (
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NINA_MOSI Pin = PA12
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NINA_MISO Pin = PA13
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NINA_CS Pin = PA14
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NINA_SCK Pin = PA15
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NINA_GPIO0 Pin = PA27
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NINA_RESETN Pin = PA08
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NINA_ACK Pin = PA28
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)
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// UART0 aka USBCDC pins
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const (
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USBCDC_DM_PIN Pin = PA24
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USBCDC_DP_PIN Pin = PA25
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)
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// UART1 on the Arduino Nano 33 connects to the onboard NINA-W102 WiFi chip.
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var (
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UART1 = UART{Bus: sam.SERCOM5_USART,
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Buffer: NewRingBuffer(),
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Mode: PinSERCOMAlt,
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IRQVal: sam.IRQ_SERCOM5,
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}
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)
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// UART1 pins
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const (
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UART_TX_PIN Pin = PA22
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UART_RX_PIN Pin = PA23
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)
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//go:export SERCOM5_IRQHandler
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func handleUART1() {
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defaultUART1Handler()
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}
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// UART2 on the Arduino Nano 33 connects to the normal TX/RX pins.
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var (
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UART2 = UART{Bus: sam.SERCOM3_USART,
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Buffer: NewRingBuffer(),
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Mode: PinSERCOMAlt,
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IRQVal: sam.IRQ_SERCOM3,
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}
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)
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//go:export SERCOM3_IRQHandler
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func handleUART2() {
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// should reset IRQ
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UART2.Receive(byte((UART2.Bus.DATA.Get() & 0xFF)))
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UART2.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INTFLAG_RXC)
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}
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// I2C pins
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const (
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SDA_PIN Pin = A4 // SDA: SERCOM4/PAD[1]
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SCL_PIN Pin = A5 // SCL: SERCOM4/PAD[1]
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)
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// I2C on the Arduino Nano 33.
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var (
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I2C0 = I2C{Bus: sam.SERCOM4_I2CM,
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SDA: SDA_PIN,
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SCL: SCL_PIN,
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PinMode: PinSERCOMAlt}
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)
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// SPI pins
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const (
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SPI0_SCK_PIN Pin = PB11 // SCK: SERCOM4/PAD[3]
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SPI0_MOSI_PIN Pin = PB10 // MOSI: SERCOM4/PAD[2]
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SPI0_MISO_PIN Pin = PA12 // MISO: SERCOM4/PAD[0]
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)
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// SPI on the Arduino Nano 33.
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var (
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SPI0 = SPI{Bus: sam.SERCOM1_SPI}
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)
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// I2S pins
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const (
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I2S_SCK_PIN Pin = PA10
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I2S_SD_PIN Pin = PA08
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I2S_WS_PIN = NoPin // TODO: figure out what this is on Arduino Nano 33.
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)
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// I2S on the Arduino Nano 33.
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var (
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I2S0 = I2S{Bus: sam.I2S}
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)
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@ -65,6 +65,20 @@ const (
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UART_RX_PIN = PB09 // PORTB
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)
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// UART1 on the Circuit Playground Express.
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var (
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UART1 = UART{Bus: sam.SERCOM1_USART,
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Buffer: NewRingBuffer(),
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Mode: PinSERCOM,
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IRQVal: sam.IRQ_SERCOM1,
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}
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)
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//go:export SERCOM1_IRQHandler
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func handleUART1() {
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defaultUART1Handler()
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}
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// I2C pins
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const (
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SDA_PIN = PB02 // I2C0 external
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@ -48,6 +48,20 @@ const (
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UART_RX_PIN = D11
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)
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// UART1 on the Feather M0.
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var (
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UART1 = UART{Bus: sam.SERCOM1_USART,
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Buffer: NewRingBuffer(),
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Mode: PinSERCOM,
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IRQVal: sam.IRQ_SERCOM1,
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}
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)
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//go:export SERCOM1_IRQHandler
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func handleUART1() {
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defaultUART1Handler()
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}
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// I2C pins
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const (
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SDA_PIN = PA22 // SDA: SERCOM3/PAD[0]
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@ -48,6 +48,20 @@ const (
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UART_RX_PIN = D11
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)
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// UART1 on the ItsyBitsy M0.
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var (
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UART1 = UART{Bus: sam.SERCOM1_USART,
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Buffer: NewRingBuffer(),
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Mode: PinSERCOM,
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IRQVal: sam.IRQ_SERCOM1,
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}
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)
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//go:export SERCOM1_IRQHandler
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func handleUART1() {
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defaultUART1Handler()
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}
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// I2C pins
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const (
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SDA_PIN = PA22 // SDA: SERCOM3/PAD[0]
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@ -39,6 +39,20 @@ const (
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UART_RX_PIN = D3
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)
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// UART1 on the Trinket M0.
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var (
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UART1 = UART{Bus: sam.SERCOM1_USART,
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Buffer: NewRingBuffer(),
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Mode: PinSERCOM,
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IRQVal: sam.IRQ_SERCOM1,
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}
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)
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//go:export SERCOM1_IRQHandler
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func handleUART1() {
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defaultUART1Handler()
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}
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// SPI pins
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const (
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SPI0_SCK_PIN = D3
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@ -250,14 +250,13 @@ func waitADCSync() {
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type UART struct {
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Buffer *RingBuffer
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Bus *sam.SERCOM_USART_Type
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Mode PinMode
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IRQVal uint32
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}
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var (
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// UART0 is actually a USB CDC interface.
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UART0 = USBCDC{Buffer: NewRingBuffer()}
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// The first hardware serial port on the SAMD21. Uses the SERCOM0 interface.
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UART1 = UART{Bus: sam.SERCOM1_USART, Buffer: NewRingBuffer()}
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)
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const (
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@ -300,6 +299,8 @@ func (uart UART) Configure(config UARTConfig) {
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txpad = sercomTXPad2
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case PA16:
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txpad = sercomTXPad0
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case PA22:
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txpad = sercomTXPad0
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default:
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panic("Invalid TX pin for UART")
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}
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@ -315,13 +316,15 @@ func (uart UART) Configure(config UARTConfig) {
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rxpad = sercomRXPad3
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case PA17:
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rxpad = sercomRXPad1
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case PA23:
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rxpad = sercomRXPad1
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default:
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panic("Invalid RX pin for UART")
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}
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// configure pins
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config.TX.Configure(PinConfig{Mode: PinSERCOM})
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config.RX.Configure(PinConfig{Mode: PinSERCOM})
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config.TX.Configure(PinConfig{Mode: uart.Mode})
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config.RX.Configure(PinConfig{Mode: uart.Mode})
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// reset SERCOM0
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uart.Bus.CTRLA.SetBits(sam.SERCOM_USART_CTRLA_SWRST)
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@ -372,13 +375,7 @@ func (uart UART) Configure(config UARTConfig) {
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uart.Bus.INTENSET.Set(sam.SERCOM_USART_INTENSET_RXC)
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// Enable RX IRQ.
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if config.TX == PA10 {
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// UART0
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arm.EnableIRQ(sam.IRQ_SERCOM0)
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} else {
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// UART1 which is the normal default, since UART0 is used for USBCDC.
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arm.EnableIRQ(sam.IRQ_SERCOM1)
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}
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arm.EnableIRQ(uart.IRQVal)
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}
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// SetBaudRate sets the communication speed for the UART.
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@ -404,8 +401,8 @@ func (uart UART) WriteByte(c byte) error {
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return nil
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}
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//go:export SERCOM1_IRQHandler
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func handleUART1() {
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// defaultUART1Handler handles the UART1 IRQ.
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func defaultUART1Handler() {
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// should reset IRQ
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UART1.Receive(byte((UART1.Bus.DATA.Get() & 0xFF)))
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UART1.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INTFLAG_RXC)
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@ -1182,23 +1179,35 @@ func (usbcdc USBCDC) WriteByte(c byte) error {
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
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// set count of bytes to be sent
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.SetBits((1&usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)<<usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos |
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(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos))
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.SetBits((1 & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
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// ack transfer complete flag
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// clear transfer complete flag
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setEPINTFLAG(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
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// send data by setting bank ready
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setEPSTATUSSET(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
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// wait for transfer to complete
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timeout := 3000
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for (getEPINTFLAG(usb_CDC_ENDPOINT_IN) & sam.USB_DEVICE_EPINTFLAG_TRCPT1) == 0 {
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timeout--
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if timeout == 0 {
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return errors.New("USBCDC write byte timeout")
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}
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}
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}
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|
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return nil
|
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}
|
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|
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func (usbcdc USBCDC) DTR() bool {
|
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return (usbLineInfo.lineState & usb_CDC_LINESTATE_DTR) > 0
|
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}
|
||||
|
||||
func (usbcdc USBCDC) RTS() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_RTS) > 0
|
||||
}
|
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|
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const (
|
||||
// these are SAMD21 specific.
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos = 0
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||||
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@ -1346,6 +1355,7 @@ func handleUSB() {
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|||
|
||||
// Clear the Bank 0 ready flag on Control OUT
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
ok := false
|
||||
if (setup.bmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
|
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@ -1375,20 +1385,25 @@ func handleUSB() {
|
|||
}
|
||||
}
|
||||
|
||||
// Now the actual transfer handlers
|
||||
eptInts := sam.USB_DEVICE.EPINTSMRY.Get() & 0xFE // Remove endpoint number 0 (setup)
|
||||
// Now the actual transfer handlers, ignore endpoint number 0 (setup)
|
||||
var i uint32
|
||||
for i = 1; i < uint32(len(endPoints)); i++ {
|
||||
// Check if endpoint has a pending interrupt
|
||||
if eptInts&(1<<i) > 0 {
|
||||
// yes, so handle flags
|
||||
epFlags := getEPINTFLAG(i)
|
||||
setEPINTFLAG(i, epFlags)
|
||||
|
||||
// Endpoint Transfer Complete Interrupt
|
||||
if epFlags > 0 {
|
||||
switch i {
|
||||
case usb_CDC_ENDPOINT_OUT:
|
||||
if (epFlags & sam.USB_DEVICE_EPINTFLAG_TRCPT0) > 0 {
|
||||
handleEndpoint(i)
|
||||
}
|
||||
setEPINTFLAG(i, epFlags)
|
||||
case usb_CDC_ENDPOINT_IN, usb_CDC_ENDPOINT_ACM:
|
||||
// set bank ready
|
||||
setEPSTATUSCLR(i, sam.USB_DEVICE_EPSTATUSCLR_BK1RDY)
|
||||
|
||||
// ack transfer complete
|
||||
setEPINTFLAG(i, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1403,7 +1418,7 @@ func initEndpoint(ep, config uint32) {
|
|||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_INTERRUPT+1)<<sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_INTERRUPT + 1) << sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointOut:
|
||||
// set packet size
|
||||
|
|
@ -1413,11 +1428,14 @@ func initEndpoint(ep, config uint32) {
|
|||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_BULK+1)<<sam.USB_DEVICE_EPCFG_EPTYPE0_Pos))
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// ack the current transfer
|
||||
// receive interrupts when current transfer complete
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_EPINTENSET_TRCPT0)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// ready for next transfer
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
|
|
@ -1432,7 +1450,7 @@ func initEndpoint(ep, config uint32) {
|
|||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_BULK+1)<<sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// NAK on endpoint IN, the bank is not yet filled in.
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK1RDY)
|
||||
|
|
@ -1515,7 +1533,12 @@ func handleStandardSetup(setup usbSetup) bool {
|
|||
setEPSTATUSSET(0, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
|
||||
// wait for transfer to complete
|
||||
timeout := 3000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_EPINTFLAG_TRCPT1) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// last, set the device address to that requested by host
|
||||
|
|
@ -1659,11 +1682,21 @@ func armRecvCtrlOUT(ep uint32) uint32 {
|
|||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
// Wait until OUT transfer is ready.
|
||||
timeout := 3000
|
||||
for (getEPSTATUS(ep) & sam.USB_DEVICE_EPSTATUS_BK0RDY) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
// Wait until OUT transfer is completed.
|
||||
timeout = 3000
|
||||
for (getEPINTFLAG(ep) & sam.USB_DEVICE_EPINTFLAG_TRCPT0) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
// return number of bytes received
|
||||
|
|
@ -1800,9 +1833,14 @@ func handleEndpoint(ep uint32) {
|
|||
UART0.Receive(byte((udd_ep_out_cache_buffer[ep][i] & 0xFF)))
|
||||
}
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set multi packet size to 64
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
}
|
||||
|
||||
func sendZlp(ep uint32) {
|
||||
|
|
|
|||
|
|
@ -473,6 +473,9 @@ const (
|
|||
usb_CDC_CS_INTERFACE = 0x24
|
||||
usb_CDC_CS_ENDPOINT = 0x25
|
||||
usb_CDC_DATA_INTERFACE_CLASS = 0x0A
|
||||
|
||||
usb_CDC_LINESTATE_DTR = 0x01
|
||||
usb_CDC_LINESTATE_RTS = 0x02
|
||||
)
|
||||
|
||||
// usbDeviceDescBank is the USB device endpoint descriptor.
|
||||
|
|
|
|||
5
targets/arduino-nano33.json
Обычный файл
5
targets/arduino-nano33.json
Обычный файл
|
|
@ -0,0 +1,5 @@
|
|||
{
|
||||
"inherits": ["atsamd21g18a"],
|
||||
"build-tags": ["sam", "atsamd21g18a", "arduino_nano33"],
|
||||
"flash": "bossac -d -i -e -w -v -R --offset=0x2000 {bin}"
|
||||
}
|
||||
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