diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | README.md | 1 | ||||
| -rw-r--r-- | src/machine/board_feather-m4.go | 89 | ||||
| -rw-r--r-- | src/machine/machine_atsamd51j19.go | 8 | ||||
| -rw-r--r-- | src/runtime/runtime_atsamd51j19.go | 43 | ||||
| -rw-r--r-- | targets/atsamd51j19a.json | 13 | ||||
| -rw-r--r-- | targets/feather-m4.json | 8 |
7 files changed, 164 insertions, 0 deletions
@@ -221,6 +221,8 @@ smoketest: @$(MD5SUM) test.gba $(TINYGO) build -size short -o test.hex -target=itsybitsy-m4 examples/blinky1 @$(MD5SUM) test.hex + $(TINYGO) build -size short -o test.hex -target=feather-m4 examples/blinky1 + @$(MD5SUM) test.hex $(TINYGO) build -size short -o test.hex -target=nucleo-f103rb examples/blinky1 @$(MD5SUM) test.hex $(TINYGO) build -size short -o test.hex -target=pinetime-devkit0 examples/blinky1 @@ -47,6 +47,7 @@ The following 20 microcontroller boards are currently supported: * [Adafruit Circuit Playground Express](https://www.adafruit.com/product/3333) * [Adafruit Feather M0](https://www.adafruit.com/product/2772) +* [Adafruit Feather M4](https://www.adafruit.com/product/3857) * [Adafruit ItsyBitsy M0](https://www.adafruit.com/product/3727) * [Adafruit ItsyBitsy M4](https://www.adafruit.com/product/3800) * [Adafruit Trinket M0](https://www.adafruit.com/product/3500) diff --git a/src/machine/board_feather-m4.go b/src/machine/board_feather-m4.go new file mode 100644 index 000000000..5c3b853f3 --- /dev/null +++ b/src/machine/board_feather-m4.go @@ -0,0 +1,89 @@ +// +build sam,atsamd51,feather_m4 + +package machine + +import "device/sam" + +// used to reset into bootloader +const RESET_MAGIC_VALUE = 0xf01669ef + +// GPIO Pins +const ( + D0 = PB17 // UART0 RX/PWM available + D1 = PB16 // UART0 TX/PWM available + D4 = PA14 // PWM available + D5 = PA16 // PWM available + D6 = PA18 // PWM available + D8 = PB03 // built-in neopixel + D9 = PA19 // PWM available + D10 = PA20 // can be used for PWM or UART1 TX + D11 = PA21 // can be used for PWM or UART1 RX + D12 = PA22 // PWM available + D13 = PA23 // PWM available + D21 = PA13 // PWM available + D22 = PA12 // PWM available + D23 = PB22 // PWM available + D24 = PB23 // PWM available + D25 = PA17 // PWM available +) + +// Analog pins +const ( + A0 = PA02 // ADC/AIN[0] + A1 = PA05 // ADC/AIN[2] + A2 = PB08 // ADC/AIN[3] + A3 = PB09 // ADC/AIN[4] + A4 = PA04 // ADC/AIN[5] + A5 = PA06 // ADC/AIN[10] +) + +const ( + LED = D13 +) + +// UART0 aka USBCDC pins +const ( + USBCDC_DM_PIN = PA24 + USBCDC_DP_PIN = PA25 +) + +// UART1 pins +const ( + UART_TX_PIN = D1 + UART_RX_PIN = D0 +) + +// I2C pins +const ( + SDA_PIN = D22 // SDA: SERCOM2/PAD[0] + SCL_PIN = D21 // SCL: SERCOM2/PAD[1] +) + +// I2C on the Feather M4. +var ( + I2C0 = I2C{Bus: sam.SERCOM2_I2CM, + SDA: SDA_PIN, + SCL: SCL_PIN, + PinMode: PinSERCOM} +) + +// SPI pins +const ( + SPI0_SCK_PIN = D25 // SCK: SERCOM1/PAD[1] + SPI0_MOSI_PIN = D24 // MOSI: SERCOM1/PAD[3] + SPI0_MISO_PIN = D23 // MISO: SERCOM1/PAD[2] +) + +// SPI on the Feather M4. +var ( + SPI0 = SPI{Bus: sam.SERCOM1_SPIM, + SCK: SPI0_SCK_PIN, + MOSI: SPI0_MOSI_PIN, + MISO: SPI0_MISO_PIN, + DOpad: spiTXPad3SCK1, + DIpad: sercomRXPad2, + MISOPinMode: PinSERCOM, + MOSIPinMode: PinSERCOM, + SCKPinMode: PinSERCOM, + } +) diff --git a/src/machine/machine_atsamd51j19.go b/src/machine/machine_atsamd51j19.go new file mode 100644 index 000000000..18cff65c2 --- /dev/null +++ b/src/machine/machine_atsamd51j19.go @@ -0,0 +1,8 @@ +// +build sam,atsamd51,atsamd51j19 + +// Peripheral abstraction layer for the atsamd51. +// +// Datasheet: +// http://ww1.microchip.com/downloads/en/DeviceDoc/60001507C.pdf +// +package machine diff --git a/src/runtime/runtime_atsamd51j19.go b/src/runtime/runtime_atsamd51j19.go new file mode 100644 index 000000000..2f3f7f60c --- /dev/null +++ b/src/runtime/runtime_atsamd51j19.go @@ -0,0 +1,43 @@ +// +build sam,atsamd51,atsamd51j19 + +package runtime + +import ( + "device/sam" +) + +func initSERCOMClocks() { + // Turn on clock to SERCOM0 for UART0 + sam.MCLK.APBAMASK.SetBits(sam.MCLK_APBAMASK_SERCOM0_) + sam.GCLK.PCHCTRL[7].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) + + // sets the "slow" clock shared by all SERCOM + sam.GCLK.PCHCTRL[3].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) + + // Turn on clock to SERCOM1 + sam.MCLK.APBAMASK.SetBits(sam.MCLK_APBAMASK_SERCOM1_) + sam.GCLK.PCHCTRL[8].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) + + // Turn on clock to SERCOM2 + sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_SERCOM2_) + sam.GCLK.PCHCTRL[23].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) + + // Turn on clock to SERCOM3 + sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_SERCOM3_) + sam.GCLK.PCHCTRL[24].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) + + // Turn on clock to SERCOM4 + sam.MCLK.APBDMASK.SetBits(sam.MCLK_APBDMASK_SERCOM4_) + sam.GCLK.PCHCTRL[34].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) + + // Turn on clock to SERCOM5 + sam.MCLK.APBDMASK.SetBits(sam.MCLK_APBDMASK_SERCOM5_) + sam.GCLK.PCHCTRL[35].Set((sam.GCLK_PCHCTRL_GEN_GCLK1 << sam.GCLK_PCHCTRL_GEN_Pos) | + sam.GCLK_PCHCTRL_CHEN) +} diff --git a/targets/atsamd51j19a.json b/targets/atsamd51j19a.json new file mode 100644 index 000000000..9ddde66fe --- /dev/null +++ b/targets/atsamd51j19a.json @@ -0,0 +1,13 @@ +{ + "inherits": ["cortex-m"], + "llvm-target": "armv7em-none-eabi", + "build-tags": ["atsamd51j19", "atsamd51", "sam"], + "cflags": [ + "--target=armv7em-none-eabi", + "-Qunused-arguments" + ], + "linkerscript": "targets/atsamd51.ld", + "extra-files": [ + "src/device/sam/atsamd51j19a.s" + ] +} diff --git a/targets/feather-m4.json b/targets/feather-m4.json new file mode 100644 index 000000000..f04523bd6 --- /dev/null +++ b/targets/feather-m4.json @@ -0,0 +1,8 @@ +{ + "inherits": ["atsamd51j19a"], + "build-tags": ["sam", "atsamd51j19a", "feather_m4"], + "flash-1200-bps-reset": "true", + "flash-method": "msd", + "msd-volume-name": "FEATHERBOOT", + "msd-firmware-name": "firmware.uf2" +} |