MicroPython: Early wakeup GPIO latch module.

.github/workflows/micropython-badger2040.yml

@@ -7,7 +7,7 @@ on:
     types: [created]
 
 env:
-  MICROPYTHON_VERSION: v1.19
+  MICROPYTHON_VERSION: 9dfabcd6d3d080aced888e8474e921f11dc979bb
   BOARD_TYPE: PIMORONI_BADGER2040
   # MicroPython version will be contained in github.event.release.tag_name for releases
   RELEASE_FILE: pimoroni-badger2040-${{github.event.release.tag_name || github.sha}}-micropython

.github/workflows/micropython-picow.yml

@@ -68,6 +68,8 @@ jobs:
         include:
         - name: picow
           board: PICO_W
+        - name: picow_enviro
+          board: PICO_W_ENVIRO
 
     env:
       # MicroPython version will be contained in github.event.release.tag_name for releases

drivers/ltr559/ltr559.cpp

@@ -148,7 +148,7 @@ namespace pimoroni {
       float lux = ((int32_t)data.als0 * ch0_c[ch_idx]) - ((int32_t)data.als1 * ch1_c[ch_idx]);
       lux /= (float)this->data.integration_time / 100.0f;
       lux /= (float)this->data.gain;
-      data.lux = (uint16_t)(lux / 10000.0f);
+      data.lux = lux / 10000.0f;
     }
 
     return has_updated;

drivers/ltr559/ltr559.hpp

@@ -94,7 +94,7 @@ namespace pimoroni {
 	  uint16_t integration_time;
 	  uint16_t gain;
 	  float ratio;
-    uint16_t lux;
+    float lux;
   } ltr559_reading;
 
   class lookup {

examples/breakout_ltr559/demo.cpp

@@ -25,7 +25,7 @@ int main() {
   while(true){
     bool new_data = ltr559.get_reading();
     if(new_data) {
-      printf("Lux: %d Prox: %d\n", ltr559.data.lux, ltr559.data.proximity);
+      printf("Lux: %.2f Prox: %d\n", ltr559.data.lux, ltr559.data.proximity);
     }
     sleep_ms(100);
   };

micropython/_board/badger2040/fixup.sh

@@ -0,0 +1,6 @@
+SRC_DIR=$1
+DST_DIR=$2
+
+echo "Applying wakeup_gpio.patch"
+cd "$DST_DIR/../../lib/pico-sdk"
+git apply "$SRC_DIR/wakeup_gpio.patch"

micropython/_board/badger2040/wakeup_gpio.patch

@@ -0,0 +1,143 @@
+diff --git a/src/rp2_common/pico_runtime/runtime.c b/src/rp2_common/pico_runtime/runtime.c
+index 70dd3bb..b8c1ed0 100644
+--- a/src/rp2_common/pico_runtime/runtime.c
++++ b/src/rp2_common/pico_runtime/runtime.c
+@@ -17,6 +17,7 @@
+ #include "hardware/clocks.h"
+ #include "hardware/irq.h"
+ #include "hardware/resets.h"
++#include "hardware/gpio.h"
+
+ #include "pico/mutex.h"
+ #include "pico/time.h"
+@@ -32,6 +33,21 @@
+ #include "pico/bootrom.h"
+ #endif
+
++// Pins to toggle on wakeup
++#ifndef PICO_WAKEUP_PIN_MASK
++#define PICO_WAKEUP_PIN_MASK ((0b1 << 10) | (0b1 << 25))
++#endif
++
++// Direction
++#ifndef PICO_WAKEUP_PIN_DIR
++#define PICO_WAKEUP_PIN_DIR ((0b1 << 10) | (0b1 << 25))
++#endif
++
++// Value
++#ifndef PICO_WAKEUP_PIN_VALUE
++#define PICO_WAKEUP_PIN_VALUE ((0b1 << 10) | (0b1 << 25))
++#endif
++
+ extern char __StackLimit; /* Set by linker.  */
+
+ uint32_t __attribute__((section(".ram_vector_table"))) ram_vector_table[48];
+@@ -61,11 +77,18 @@ void runtime_install_stack_guard(void *stack_bottom) {
+                    | 0x10000000; // XN = disable instruction fetch; no other bits means no permissions
+ }
+
+-void runtime_init(void) {
++void runtime_user_init(void) {
++    gpio_init_mask(PICO_WAKEUP_PIN_MASK);
++    gpio_set_dir_masked(PICO_WAKEUP_PIN_MASK, PICO_WAKEUP_PIN_DIR);
++    gpio_put_masked(PICO_WAKEUP_PIN_MASK, PICO_WAKEUP_PIN_VALUE);
++}
++
++void runtime_reset_peripherals(void) {
+     // Reset all peripherals to put system into a known state,
+     // - except for QSPI pads and the XIP IO bank, as this is fatal if running from flash
+     // - and the PLLs, as this is fatal if clock muxing has not been reset on this boot
+     // - and USB, syscfg, as this disturbs USB-to-SWD on core 1
++
+     reset_block(~(
+             RESETS_RESET_IO_QSPI_BITS |
+             RESETS_RESET_PADS_QSPI_BITS |
+@@ -86,7 +109,9 @@ void runtime_init(void) {
+             RESETS_RESET_UART1_BITS |
+             RESETS_RESET_USBCTRL_BITS
+     ));
++}
+
++void runtime_init(void) {
+     // pre-init runs really early since we need it even for memcpy and divide!
+     // (basically anything in aeabi that uses bootrom)
+
+diff --git a/src/rp2_common/pico_standard_link/crt0.S b/src/rp2_common/pico_standard_link/crt0.S
+index b2992f6..6091e70 100644
+--- a/src/rp2_common/pico_standard_link/crt0.S
++++ b/src/rp2_common/pico_standard_link/crt0.S
+@@ -9,6 +9,8 @@
+ #include "hardware/regs/addressmap.h"
+ #include "hardware/regs/sio.h"
+ #include "pico/binary_info/defs.h"
++#include "hardware/regs/resets.h"
++#include "hardware/regs/rosc.h"
+
+ #ifdef NDEBUG
+ #ifndef COLLAPSE_IRQS
+@@ -225,6 +227,23 @@ _reset_handler:
+     cmp r0, #0
+     bne hold_non_core0_in_bootrom
+
++    // Increase ROSC frequency to ~48MHz (range 14.4 - 96)
++    // Startup drops from ~160ms to ~32ms on Pico W MicroPython
++    ldr r0, =(ROSC_BASE + ROSC_DIV_OFFSET)
++    ldr r1, =0xaa2
++    str r1, [r0]
++
++    ldr r1, =runtime_reset_peripherals
++    blx r1
++
++    ldr r1, =runtime_user_init
++    blx r1
++
++    // Read GPIO state for front buttons and store
++    movs r3, 0xd0                // Load 0xd0 into r3
++    lsls r3, r3, 24              // Shift left 24 to get 0xd0000000
++    ldr r6, [r3, 4]              // Load GPIO state (0xd0000004) into r6
++
+     // In a NO_FLASH binary, don't perform .data copy, since it's loaded
+     // in-place by the SRAM load. Still need to clear .bss
+ #if !PICO_NO_FLASH
+@@ -251,6 +270,10 @@ bss_fill_test:
+     cmp r1, r2
+     bne bss_fill_loop
+
++    // runtime_wakeup_gpio_state gets zero init above
++    ldr r2, =runtime_wakeup_gpio_state   // Load output var addr into r2
++    str r6, [r2]                        // Store r6 to r2
++
+ platform_entry: // symbol for stack traces
+     // Use 32-bit jumps, in case these symbols are moved out of branch range
+     // (e.g. if main is in SRAM and crt0 in flash)
+@@ -314,6 +337,19 @@ data_cpy_table:
+ runtime_init:
+     bx lr
+
++.weak runtime_user_init
++.type runtime_user_init,%function
++.thumb_func
++runtime_user_init:
++    bx lr
++
++.weak runtime_reset_peripherals
++.type runtime_reset_peripherals,%function
++.thumb_func
++runtime_reset_peripherals:
++    bx lr
++
++
+ // ----------------------------------------------------------------------------
+ // If core 1 somehow gets into crt0 due to a spectacular VTOR mishap, we need to
+ // catch it and send back to the sleep-and-launch code in the bootrom. Shouldn't
+@@ -345,3 +381,9 @@ __get_current_exception:
+ .align 2
+     .equ HeapSize, PICO_HEAP_SIZE
+ .space HeapSize
++
++.section .data._reset_handler
++.global runtime_wakeup_gpio_state
++.align 4
++runtime_wakeup_gpio_state:
++.word 0x00000000
+\ No newline at end of file

micropython/_board/board-fixup.sh

@@ -13,4 +13,9 @@ fi
 if [[ ! -d "$MPY_DIR/boards/$BOARD" ]] && [[ -d "$FIXUP_DIR/$NAME/$BOARD/" ]]; then
     echo "Missing board dir. Copying: $FIXUP_DIR/$NAME/$BOARD/ to $MPY_DIR/boards/"
     cp -r "$FIXUP_DIR/$NAME/$BOARD/" "$MPY_DIR/boards/"
+fi
+
+if [[ -f "$FIXUP_DIR/$NAME/fixup.sh" ]]; then
+    echo "Running custom fixup[.sh"
+    bash "$FIXUP_DIR/$NAME/fixup.sh" "$FIXUP_DIR/$NAME" "$MPY_DIR"
 fi

micropython/_board/picow_enviro/PICO_W_ENVIRO/board.json

@@ -0,0 +1,21 @@
+{
+    "deploy": [
+        "../deploy.md"
+    ],
+    "docs": "",
+    "features": [
+        "Breadboard friendly",
+        "Castellated Pads",
+        "Micro USB",
+        "WiFi"
+    ],
+    "id": "rp2-pico-w",
+    "images": [
+        "rp2-pico-w.jpg"
+    ],
+    "mcu": "rp2040",
+    "product": "Pico W",
+    "thumbnail": "",
+    "url": "https://www.raspberrypi.com/products/raspberry-pi-pico/",
+    "vendor": "Raspberry Pi"
+}

micropython/_board/picow_enviro/PICO_W_ENVIRO/manifest.py

@@ -0,0 +1,8 @@
+include("../manifest.py")
+
+freeze("$(MPY_DIR)/tools", "upip.py")
+freeze("$(MPY_DIR)/tools", "upip_utarfile.py")
+
+if os.path.isdir(convert_path("$(MPY_LIB_DIR)")):
+    freeze("$(MPY_LIB_DIR)/python-ecosys/urequests", "urequests.py")
+    freeze("$(MPY_LIB_DIR)/micropython/umqtt.simple", "umqtt")

micropython/_board/picow_enviro/PICO_W_ENVIRO/mpconfigboard.cmake

@@ -0,0 +1,8 @@
+# cmake file for Raspberry Pi Pico W
+set(MICROPY_BOARD PICO_W)
+
+set(MICROPY_PY_LWIP ON)
+set(MICROPY_PY_NETWORK_CYW43 ON)
+
+# Board specific version of the frozen manifest
+set(MICROPY_FROZEN_MANIFEST ${CMAKE_SOURCE_DIR}/boards/PICO_W_ENVIRO/manifest.py)

micropython/_board/picow_enviro/PICO_W_ENVIRO/mpconfigboard.h

@@ -0,0 +1,25 @@
+// Board and hardware specific configuration
+#define MICROPY_HW_BOARD_NAME                   "Raspberry Pi Pico W"
+
+// todo: We need something to check our binary size
+#define MICROPY_HW_FLASH_STORAGE_BYTES          (848 * 1024)
+
+// Enable networking.
+#define MICROPY_PY_NETWORK 1
+
+// CYW43 driver configuration.
+#define CYW43_USE_SPI (1)
+#define CYW43_LWIP (1)
+#define CYW43_GPIO (1)
+#define CYW43_SPI_PIO (1)
+
+// For debugging mbedtls - also set
+// Debug level (0-4) 1=warning, 2=info, 3=debug, 4=verbose
+// #define MODUSSL_MBEDTLS_DEBUG_LEVEL 1
+
+#define MICROPY_HW_PIN_CYW43_COUNT CYW43_WL_GPIO_COUNT
+#ifdef CYW43_WL_GPIO_LED_PIN
+#define MICROPY_HW_PIN_CYW43_LED_PIN_NUM CYW43_WL_GPIO_LED_PIN
+#endif
+
+#define MICROPY_HW_PIN_RESERVED(i) ((i) == CYW43_PIN_WL_HOST_WAKE || (i) == CYW43_PIN_WL_REG_ON)

micropython/_board/picow_enviro/fixup.sh

@@ -0,0 +1,6 @@
+SRC_DIR=$1
+DST_DIR=$2
+
+echo "Applying wakeup_gpio.patch"
+cd "$DST_DIR/../../lib/pico-sdk"
+git apply "$SRC_DIR/wakeup_gpio.patch"

micropython/_board/picow_enviro/pico_w_enviro.h

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+// -----------------------------------------------------
+// NOTE: THIS HEADER IS ALSO INCLUDED BY ASSEMBLER SO
+//       SHOULD ONLY CONSIST OF PREPROCESSOR DIRECTIVES
+// -----------------------------------------------------
+
+// This header may be included by other board headers as "boards/pico.h"
+
+#ifndef _BOARDS_PICO_W_H
+#define _BOARDS_PICO_W_H
+
+// For board detection
+#define RASPBERRYPI_PICO_W
+
+// --- UART ---
+#ifndef PICO_DEFAULT_UART
+#define PICO_DEFAULT_UART 0
+#endif
+#ifndef PICO_DEFAULT_UART_TX_PIN
+#define PICO_DEFAULT_UART_TX_PIN 0
+#endif
+#ifndef PICO_DEFAULT_UART_RX_PIN
+#define PICO_DEFAULT_UART_RX_PIN 1
+#endif
+
+// --- LED ---
+// no PICO_DEFAULT_LED_PIN - LED is on Wireless chip
+// no PICO_DEFAULT_WS2812_PIN
+
+// --- I2C ---
+#ifndef PICO_DEFAULT_I2C
+#define PICO_DEFAULT_I2C 0
+#endif
+#ifndef PICO_DEFAULT_I2C_SDA_PIN
+#define PICO_DEFAULT_I2C_SDA_PIN 4
+#endif
+#ifndef PICO_DEFAULT_I2C_SCL_PIN
+#define PICO_DEFAULT_I2C_SCL_PIN 5
+#endif
+
+// --- SPI ---
+#ifndef PICO_DEFAULT_SPI
+#define PICO_DEFAULT_SPI 0
+#endif
+#ifndef PICO_DEFAULT_SPI_SCK_PIN
+#define PICO_DEFAULT_SPI_SCK_PIN 18
+#endif
+#ifndef PICO_DEFAULT_SPI_TX_PIN
+#define PICO_DEFAULT_SPI_TX_PIN 19
+#endif
+#ifndef PICO_DEFAULT_SPI_RX_PIN
+#define PICO_DEFAULT_SPI_RX_PIN 16
+#endif
+#ifndef PICO_DEFAULT_SPI_CSN_PIN
+#define PICO_DEFAULT_SPI_CSN_PIN 17
+#endif
+
+// --- FLASH ---
+
+#define PICO_BOOT_STAGE2_CHOOSE_W25Q080 1
+
+#ifndef PICO_FLASH_SPI_CLKDIV
+#define PICO_FLASH_SPI_CLKDIV 2
+#endif
+
+#ifndef PICO_FLASH_SIZE_BYTES
+#define PICO_FLASH_SIZE_BYTES (2 * 1024 * 1024)
+#endif
+
+// note the SMSP mode pin is on WL_GPIO1
+// #define PICO_SMPS_MODE_PIN
+
+#ifndef PICO_RP2040_B0_SUPPORTED
+#define PICO_RP2040_B0_SUPPORTED 0
+#endif
+
+#ifndef PICO_RP2040_B1_SUPPORTED
+#define PICO_RP2040_B1_SUPPORTED 0
+#endif
+
+#ifndef CYW43_PIN_WL_HOST_WAKE
+#define CYW43_PIN_WL_HOST_WAKE 24
+#endif
+
+#ifndef CYW43_PIN_WL_REG_ON
+#define CYW43_PIN_WL_REG_ON 23
+#endif
+
+#ifndef CYW43_WL_GPIO_COUNT
+#define CYW43_WL_GPIO_COUNT 3
+#endif
+
+#ifndef CYW43_WL_GPIO_LED_PIN
+#define CYW43_WL_GPIO_LED_PIN 0
+#endif
+
+#endif