machine/board_thingsplus_rp2040 targets/thingsplus-rp2040: support sparkfun thingsplus rp2040 board

src/machine/board_thingsplus_rp2040.go

@@ -0,0 +1,81 @@
+//go:build thingsplus_rp2040
+// +build thingsplus_rp2040
+
+package machine
+
+const (
+	LED = GPIO25
+
+	// Onboard crystal oscillator frequency, in MHz.
+	xoscFreq = 12 // MHz
+)
+
+// GPIO Pins
+const (
+	GP0 Pin = GPIO0 // TX
+	GP1 Pin = GPIO1 // RX
+	GP2 Pin = GPIO2 // SCK
+	GP3 Pin = GPIO3 // COPI
+	GP4 Pin = GPIO4 // CIPO
+
+	GP6  Pin = GPIO6  // SDA
+	GP7  Pin = GPIO7  // SCL (connected to GPIO23 as well)
+	GP8  Pin = GPIO8  // WS2812 RGB LED
+	GP9  Pin = GPIO9  // muSDcard DATA3 / CS
+	GP10 Pin = GPIO10 // muSDcard DATA2
+	GP11 Pin = GPIO11 // muSDcard DATA1
+	GP12 Pin = GPIO12 // muSDcard DATA0 / CIPO
+
+	GP14 Pin = GPIO14 // muSDcard CLK /SCLK
+	GP15 Pin = GPIO15 // muSDcard CMD / COPI
+	GP16 Pin = GPIO16 // 16
+	GP17 Pin = GPIO17 // 17
+	GP18 Pin = GPIO18 // 18
+	GP19 Pin = GPIO19 // 19
+	GP20 Pin = GPIO20 // 20
+	GP21 Pin = GPIO21 // 21
+	GP22 Pin = GPIO22 // 22
+	GP23 Pin = GPIO23 // Connected to GPIO7
+	GP25 Pin = GPIO25 // Status blue LED
+	GP26 Pin = GPIO26 // ADC0
+	GP27 Pin = GPIO27 // ADC1
+	GP28 Pin = GPIO28 // ADC2
+	GP29 Pin = GPIO29 // ADC3
+)
+
+// Analog pins
+const (
+	A0 = GPIO26
+	A1 = GPIO27
+	A2 = GPIO28
+	A3 = GPIO29
+)
+
+// I2C Pins.
+const (
+	I2C0_SCL_PIN = GPIO6 // N/A
+	I2C0_SDA_PIN = GPIO7 // N/A
+
+	I2C1_SDA_PIN = GPIO6
+	I2C1_SCL_PIN = GPIO7
+
+	SDA_PIN = I2C1_SDA_PIN
+	SCL_PIN = I2C1_SCL_PIN
+)
+
+// SPI default pins
+const (
+	// Default Serial Clock Bus 0 for SPI communications
+	SPI0_SCK_PIN = GPIO2
+	// Default Serial Out Bus 0 for SPI communications
+	SPI0_SDO_PIN = GPIO3 // Tx
+	// Default Serial In Bus 0 for SPI communications
+	SPI0_SDI_PIN = GPIO4 // Rx
+
+	// Default Serial Clock Bus 1 for SPI communications to muSDcard
+	SPI1_SCK_PIN = GPIO14
+	// Default Serial Out Bus 1 for SPI communications to muSDcard
+	SPI1_SDO_PIN = GPIO15 // Tx
+	// Default Serial In Bus 1 for SPI communications to muSDcard
+	SPI1_SDI_PIN = GPIO12 // Rx
+)

targets/thingsplus-rp2040.json

@@ -0,0 +1,11 @@
+{
+    "inherits": [
+        "rp2040"
+    ],
+    "serial": "uart",
+    "build-tags": ["thingsplus_rp2040"],
+    "linkerscript": "targets/thingsplus-rp2040.ld",
+    "extra-files": [
+        "targets/pico-boot-stage2.S"
+    ]
+}

targets/thingsplus-rp2040.ld

@@ -0,0 +1,10 @@
+
+MEMORY
+{
+    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
+    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
+    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 16384K - 256
+    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
+}
+
+INCLUDE "targets/rp2040.ld"