create generic targets for esp32 boards

GNUmakefile

@@ -913,6 +913,12 @@ endif
 	$(TINYGO) build -size short -o test.hex -target=digispark -gc=leaking examples/blinky1
 	@$(MD5SUM) test.hex
 ifneq ($(XTENSA), 0)
+	$(TINYGO) build -size short -o test.bin -target=esp32-generic       examples/machinetest
+	@$(MD5SUM) test.bin
+	$(TINYGO) build -size short -o test.bin -target=esp32c3-generic     examples/machinetest
+	@$(MD5SUM) test.bin
+	$(TINYGO) build -size short -o test.bin -target=esp32s3-generic     examples/machinetest
+	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=esp32-mini32      	examples/blinky1
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini   examples/blinky1
@@ -951,15 +957,6 @@ ifneq ($(XTENSA), 0)
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=esp32s3-supermini   	examples/adc
 	@$(MD5SUM) test.bin
-	# esp32s3-wroom1
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-wroom1	    examples/blinkm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-wroom1	    examples/mcp3008
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-wroom1   	examples/pwm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=xiao-esp32s3   		examples/adc
-	@$(MD5SUM) test.bin
 endif
     # esp32c3-supermini
 	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini	    examples/blinky1

src/examples/pwm/esp32s3-wroom1.go

@@ -1,11 +0,0 @@
-//go:build esp32s3_wroom1
-
-package main
-
-import "machine"
-
-var (
-	pwm  = machine.PWM0
-	pinA = machine.GPIO17
-	pinB = machine.GPIO18
-)

src/machine/board_esp32-generic.go

@@ -0,0 +1,9 @@
+//go:build esp32_generic
+
+package machine
+
+// I2C pins
+const (
+	SDA_PIN = NoPin
+	SCL_PIN = NoPin
+)

src/machine/board_esp32c3-generic.go

@@ -0,0 +1,8 @@
+//go:build esp32c3_generic
+
+package machine
+
+const (
+	SDA_PIN = NoPin
+	SCL_PIN = NoPin
+)

src/machine/board_esp32s3-generic.go

@@ -0,0 +1,18 @@
+//go:build esp32s3_generic
+
+package machine
+
+const (
+	SCL_PIN = NoPin
+	SDA_PIN = NoPin
+
+	SPI1_SCK_PIN  = NoPin // SCK
+	SPI1_MOSI_PIN = NoPin // SDO (MOSI)
+	SPI1_MISO_PIN = NoPin // SDI (MISO)
+	SPI1_CS_PIN   = NoPin // CS
+
+	SPI2_SCK_PIN  = NoPin // SCK
+	SPI2_MOSI_PIN = NoPin // SDO (MOSI)
+	SPI2_MISO_PIN = NoPin // SDI (MISO)
+	SPI2_CS_PIN   = NoPin // CS
+)

src/machine/board_esp32s3-wroom1.go

@@ -1,18 +0,0 @@
-//go:build esp32s3_wroom1
-
-package machine
-
-const (
-	SCL_PIN = GPIO17
-	SDA_PIN = GPIO18
-
-	SPI1_SCK_PIN  = GPIO12 // SCK
-	SPI1_MOSI_PIN = GPIO11 // SDO (MOSI)
-	SPI1_MISO_PIN = GPIO13 // SDI (MISO)
-	SPI1_CS_PIN   = GPIO10 // CS
-
-	SPI2_SCK_PIN  = GPIO36 // SCK
-	SPI2_MOSI_PIN = GPIO35 // SDO (MOSI)
-	SPI2_MISO_PIN = GPIO37 // SDI (MISO)
-	SPI2_CS_PIN   = GPIO34 // CS
-)

targets/esp32-generic.json

@@ -0,0 +1,4 @@
+{
+	"inherits": ["esp32"],
+	"build-tags": ["esp32_generic"]
+}

targets/esp32c3-generic.json

@@ -0,0 +1,4 @@
+{
+  "inherits": ["esp32c3"],
+  "build-tags": ["esp32c3_generic"]
+}

targets/esp32s3-generic.json

@@ -0,0 +1,4 @@
+{
+	"inherits": ["esp32s3"],
+	"build-tags": ["esp32s3_generic"]
+}

targets/esp32s3-wroom1.json

@@ -1,4 +0,0 @@
-{
-	"inherits": ["esp32s3"],
-	"build-tags": ["esp32s3_wroom1"]
-}