Puya PY32F MCU support

.github/workflows/linux.yml

@@ -193,7 +193,7 @@ jobs:
         # Balanced with the measured build time of each group, so that the
         # shards finish at about the same time.
         group:
-          - smoketest-rp2xxx smoketest-selftest smoketest-wasm-sim
+          - smoketest-rp2xxx smoketest-selftest smoketest-wasm-sim smoketest-py32
           - smoketest-esp smoketest-riscv smoketest-flags
           - smoketest-examples smoketest-nxp smoketest-pwm-usb smoketest-avr
           - smoketest-samd smoketest-stm32 smoketest-nrf smoketest-wasm

.gitignore

@@ -24,6 +24,8 @@ src/device/renesas/*.go
 src/device/renesas/*.s
 src/device/rp/*.go
 src/device/rp/*.s
+src/device/py32/*.go
+src/device/py32/*.s
 ./vendor
 llvm-build
 llvm-project

.gitmodules

@@ -41,3 +41,6 @@
 [submodule "lib/bdwgc"]
 	path = lib/bdwgc
 	url = https://github.com/ivmai/bdwgc.git
+[submodule "lib/py32-svd"]
+	path = lib/py32-svd
+	url = https://github.com/tinygo-org/py32-svd.git

compileopts/target_test.go

@@ -1,8 +1,10 @@
 package compileopts
 
 import (
+	"encoding/csv"
 	"errors"
 	"io/fs"
+	"os"
 	"reflect"
 	"testing"
 )
@@ -54,6 +56,38 @@ func TestLoadTarget_InheritableOnlyTargetStillLoadable(t *testing.T) {
 	}
 }
 
+func TestLoadPY32ConcreteTargets(t *testing.T) {
+	file, err := os.Open("../tools/gen-py32-targets/devices.csv")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer file.Close()
+
+	records, err := csv.NewReader(file).ReadAll()
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, record := range records[1:] {
+		part, core := record[0], record[2]
+		t.Run(part, func(t *testing.T) {
+			spec, err := LoadTarget(&Options{Target: part})
+			if err != nil {
+				t.Fatal(err)
+			}
+			if spec.LinkerScript == "" {
+				t.Error("concrete target has no linker script")
+			}
+			wantCPU := "cortex-m0plus"
+			if core == "m4" {
+				wantCPU = "cortex-m4"
+			}
+			if spec.CPU != wantCPU {
+				t.Errorf("CPU is %q, want %q", spec.CPU, wantCPU)
+			}
+		})
+	}
+}
+
 func TestOverrideProperties(t *testing.T) {
 	baseAutoStackSize := true
 	base := &TargetSpec{

make/gen-device.mk

@@ -2,9 +2,9 @@
 
 .PHONY: gen-device gen-device-avr gen-device-esp gen-device-nrf gen-device-sam \
 	gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp \
-	gen-device-stm32 gen-device-renesas
+	gen-device-stm32 gen-device-renesas gen-device-py32 gen-target-py32
 
-gen-device: gen-device-avr gen-device-esp gen-device-nrf gen-device-sam gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp ## Generate microcontroller-specific sources
+gen-device: gen-device-avr gen-device-esp gen-device-nrf gen-device-sam gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp gen-device-py32 ## Generate microcontroller-specific sources
 ifneq ($(RENESAS), 0)
 gen-device: gen-device-renesas
 endif
@@ -58,3 +58,10 @@ gen-device-rp: build/gen-device-svd
 gen-device-renesas: build/gen-device-svd
 	./build/gen-device-svd -source=https://github.com/cmsis-svd/cmsis-svd-data/tree/master/data/Renesas lib/cmsis-svd/data/Renesas/ src/device/renesas/
 	GO111MODULE=off $(GO) fmt ./src/device/renesas
+
+gen-device-py32: build/gen-device-svd
+	./build/gen-device-svd -source=https://github.com/tinygo-org/py32-svd lib/py32-svd/svd src/device/py32/
+	GO111MODULE=off $(GO) fmt ./src/device/py32
+
+gen-target-py32: ## Generate PY32 target and linker definitions
+	$(GO) run ./tools/gen-py32-targets

make/smoketest.mk

@@ -19,6 +19,7 @@ SMOKETEST_SUBTARGETS = \
 	smoketest-rp2xxx \
 	smoketest-pwm-usb \
 	smoketest-stm32 \
+	smoketest-py32 \
 	smoketest-avr \
 	smoketest-esp \
 	smoketest-riscv \
@@ -403,6 +404,37 @@ ifneq ($(STM32), 0)
 	@$(MD5SUM) $(SMOKE_OUT).hex
 endif
 
+smoketest-py32: SMOKE_OUT = build/smoke/py32
+smoketest-py32: | build/smoke
+ifneq ($(PY32), 0)
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=embedfire-py32f030  examples/blinky1
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=embedfire-py32f030  examples/echo
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=embedfire-py32f002b examples/blinky1
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=embedfire-py32f002b examples/echo
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f002bx5         ./testdata/py32-uart
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f003x6         ./testdata/py32-uart
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f030x8         ./testdata/py32-uart
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f403xb         examples/echo
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f030x8         ./testdata/py32-clock
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f403xb         ./testdata/py32-clock
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32e407xc         examples/echo
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32f410xb         examples/echo
+	@$(MD5SUM) $(SMOKE_OUT).hex
+	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=py32t020x5         examples/echo
+	@$(MD5SUM) $(SMOKE_OUT).hex
+endif
+
 smoketest-avr: SMOKE_OUT = build/smoke/avr
 smoketest-avr: | build/smoke
 	$(TINYGO) build -size short -o $(SMOKE_OUT).hex -target=atmega328pb         examples/blinkm

src/machine/board_embedfire_py32f002b.go

@@ -0,0 +1,28 @@
+//go:build embedfire_py32f002b
+
+// Pin mappings for the Embedfire PY32F002B board.
+
+package machine
+
+// LEDs
+const (
+	LED1 = PA1
+	LED2 = PA5
+	LED3 = PA4
+	LED  = LED2
+)
+
+// Buttons
+const (
+	KEY1 = PA3
+	KEY2 = PA0
+)
+
+const (
+	UART_TX_PIN = PA6
+	UART_RX_PIN = PA7
+)
+
+func defaultUARTPins() (Pin, Pin) {
+	return UART_TX_PIN, UART_RX_PIN
+}

src/machine/board_embedfire_py32f030.go

@@ -0,0 +1,28 @@
+//go:build embedfire_py32f030
+
+// Pin mappings for the Embedfire PY32F030 board.
+
+package machine
+
+// LEDs
+const (
+	LED1 = PA2
+	LED2 = PA3
+	LED3 = PA4
+	LED  = LED2
+)
+
+// Buttons
+const (
+	KEY1 = PA5
+	KEY2 = PA6
+)
+
+const (
+	UART_TX_PIN = PA7
+	UART_RX_PIN = PA8
+)
+
+func defaultUARTPins() (Pin, Pin) {
+	return UART_TX_PIN, UART_RX_PIN
+}

src/machine/machine_py32_clock.go

@@ -0,0 +1,13 @@
+//go:build py32
+
+package machine
+
+var cpuFrequencyHz uint32 = defaultCPUFrequencyHz
+
+func CPUFrequency() uint32 {
+	return cpuFrequencyHz
+}
+
+func setCPUFrequency(frequency uint32) {
+	cpuFrequencyHz = frequency
+}

src/machine/machine_py32_clock_24mhz.go

@@ -0,0 +1,5 @@
+//go:build py32 && !py32_no_hsi_fs
+
+package machine
+
+const defaultCPUFrequencyHz = 24_000_000

src/machine/machine_py32_clock_8mhz.go

@@ -0,0 +1,5 @@
+//go:build py32 && py32_no_hsi_fs
+
+package machine
+
+const defaultCPUFrequencyHz = 8_000_000