Import of the watch repository from Pebble

platform/snowy/boot/src/board/board.h

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "drivers/button_id.h"
+
+#if defined(MICRO_FAMILY_STM32F2)
+#include "stm32f2xx_gpio.h"
+#elif defined(MICRO_FAMILY_STM32F4)
+#include "stm32f4xx_gpio.h"
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define GPIO_Port_NULL ((GPIO_TypeDef *) 0)
+#define GPIO_Pin_NULL ((uint16_t)0x0000)
+
+
+typedef struct {
+  //! One of EXTI_PortSourceGPIOX
+  uint8_t exti_port_source;
+
+  //! Value between 0-15
+  uint8_t exti_line;
+} ExtiConfig;
+
+typedef struct {
+  const char* const name; ///< Name for debugging purposes.
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+  ExtiConfig exti;
+  GPIOPuPd_TypeDef pull;
+} ButtonConfig;
+
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+} ButtonComConfig;
+
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+} InputConfig;
+
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint16_t gpio_pin; ///< One of GPIO_Pin_*
+  const uint8_t adc_channel; ///< One of ADC_Channel_*
+} ADCInputConfig;
+
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+  bool active_high; ///< Pin is active high or active low
+} OutputConfig;
+
+//! Alternate function pin configuration
+//! Used to configure a pin for use by a peripheral
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+  const uint16_t gpio_pin_source; ///< One of GPIO_PinSourceX.
+  const uint8_t  gpio_af; ///< One of GPIO_AF_X
+} AfConfig;
+
+typedef struct {
+  int i2c_address;
+  int axes_offsets[3];
+  bool axes_inverts[3];
+} AccelConfig;
+
+typedef struct {
+  int i2c_address;
+  int axes_offsets[3];
+  bool axes_inverts[3];
+} MagConfig;
+
+typedef struct {
+  I2C_TypeDef *const i2c;
+  AfConfig i2c_scl; ///< Alternate Function configuration for SCL pin
+  AfConfig i2c_sda; ///< Alternate Function configuration for SDA pin
+  uint32_t clock_ctrl;  ///< Peripheral clock control flag
+  uint32_t clock_speed; ///< Bus clock speed
+  uint32_t duty_cycle;  ///< Bus clock duty cycle in fast mode
+  const uint8_t ev_irq_channel; ///< I2C Event interrupt (One of X_IRQn). For example, I2C1_EV_IRQn.
+  const uint8_t er_irq_channel; ///< I2C Error interrupt (One of X_IRQn). For example, I2C1_ER_IRQn.
+  void (* const rail_cfg_fn)(void); //! Configure function for pins on this rail.
+  void (* const rail_ctl_fn)(bool enabled); //! Control function for this rail.
+} I2cBusConfig;
+
+typedef enum I2cDevice {
+  I2C_DEVICE_LIS3DH = 0,
+  I2C_DEVICE_MAG3110,
+  I2C_DEVICE_MFI,
+  I2C_DEVICE_LED_CONTROLLER,
+  I2C_DEVICE_MAX14690,
+} I2cDevice;
+
+typedef struct {
+  AfConfig i2s_ck;
+  AfConfig i2s_sd;
+  DMA_Stream_TypeDef *dma_stream;
+  uint32_t dma_channel;
+  uint32_t dma_channel_irq;
+  uint32_t dma_clock_ctrl;
+  SPI_TypeDef *spi;
+  uint32_t spi_clock_ctrl;
+
+  //! Pin we use to control power to the microphone. Only used on certain boards.
+  OutputConfig mic_gpio_power;
+} MicConfig;
+
+typedef enum {
+  OptionNotPresent = 0, // FIXME
+  OptionActiveLowOpenDrain,
+  OptionActiveHigh
+} PowerCtl5VOptions;
+
+typedef enum {
+  BacklightPinNoPwm = 0,
+  BacklightPinPwm,
+  BacklightIssiI2C
+} BacklightOptions;
+
+typedef enum {
+  VibePinNoPwm = 0,
+  VibePinPwm,
+} VibeOptions;
+
+typedef struct {
+  TIM_TypeDef* const peripheral; ///< A TIMx peripheral
+  const uint32_t config_clock;   ///< One of RCC_APB1Periph_TIMx. For example, RCC_APB1Periph_TIM3.
+  void (* const init)(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct); ///< One of TIM_OCxInit
+  void (* const preload)(TIM_TypeDef* TIMx, uint16_t TIM_OCPreload); ///< One of TIM_OCxPreloadConfig
+} TimerConfig;
+
+typedef enum {
+  CC2564A = 0,
+  CC2564B,
+} BluetoothController;
+
+typedef struct {
+  // I2C Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const I2cBusConfig *i2c_bus_configs;
+  const uint8_t i2c_bus_count;
+  const uint8_t *i2c_device_map;
+  const uint8_t i2c_device_count;
+
+  // Audio Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const bool has_mic;
+  const MicConfig mic_config;
+
+  // Ambient Light Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const bool has_ambient_light_sensor;
+  const uint32_t ambient_light_dark_threshold;
+  const OutputConfig photo_en;
+  const ADCInputConfig light_level;
+
+  // Debug Serial Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const ExtiConfig dbgserial_int;
+
+  // Accessory Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  //! Enable power supply to the accessory connector.
+  const OutputConfig accessory_power_en;
+  const AfConfig accessory_rxtx_afcfg;
+  USART_TypeDef* const accessory_uart;
+  const ExtiConfig accessory_exti;
+
+  // Bluetooth Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const BluetoothController bt_controller;
+  const OutputConfig bt_shutdown;
+  const OutputConfig bt_cts_int;
+  const ExtiConfig bt_cts_exti;
+
+  const OutputConfig mfi_reset_pin;
+
+  // Display Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const OutputConfig lcd_com; //!< This needs to be pulsed regularly to keep the sharp display fresh.
+
+  const ExtiConfig cdone_int;
+  const ExtiConfig intn_int;
+
+  //! Controls power to the sharp display
+  const PowerCtl5VOptions power_5v0_options;
+  const OutputConfig power_ctl_5v0;
+
+  const BacklightOptions backlight_options;
+  const OutputConfig backlight_ctl;
+  const TimerConfig backlight_timer;
+  const AfConfig backlight_afcfg;
+
+} BoardConfig;
+
+// Button Configuration
+/////////////////////////////////////////////////////////////////////////////
+typedef struct {
+  const ButtonConfig buttons[NUM_BUTTONS];
+  const ButtonComConfig button_com;
+} BoardConfigButton;
+
+// Power Configuration
+/////////////////////////////////////////////////////////////////////////////
+typedef struct {
+  const ExtiConfig pmic_int;
+
+  //! Analog voltage of the battery read through an ADC.
+  const ADCInputConfig battery_vmon;
+  //! Tells us if the USB cable plugged in.
+  const InputConfig vusb_stat;
+  const ExtiConfig vusb_exti;
+  //! Tells us whether the charger thinks we're charging or not.
+  const InputConfig chg_stat;
+  //! Tell the charger to use 2x current to charge faster (MFG only).
+  const OutputConfig chg_fast;
+  //! Enable the charger. We may want to disable this in MFG, normally it's always on.
+  const OutputConfig chg_en;
+
+  //! Interrupt that fires when the USB cable is plugged in
+  const bool has_vusb_interrupt;
+
+  const bool wake_on_usb_power;
+
+  const int charging_status_led_voltage_compensation;
+
+  //! Percentage for watch only mode
+  const uint8_t low_power_threshold;
+} BoardConfigPower;
+
+typedef struct {
+  const AccelConfig accel_config;
+  const ExtiConfig accel_ints[2];
+} BoardConfigAccel;
+
+typedef struct {
+  const MagConfig mag_config;
+  const ExtiConfig mag_int;
+} BoardConfigMag;
+
+typedef struct {
+  const VibeOptions vibe_options;
+  const OutputConfig vibe_ctl;
+  const OutputConfig vibe_pwm;
+  const TimerConfig vibe_timer;
+  const AfConfig vibe_afcfg;
+} BoardConfigVibe;
+
+
+#include "board_definitions.h"

platform/snowy/boot/src/board/board_definitions.h

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#if BOARD_SNOWY_BB
+#include "board_snowy_bb.h" // prototypes for Snowy bigboard
+#elif BOARD_SNOWY_EVT
+#include "board_snowy_evt.h" // prototypes for Snowy EVT
+#elif BOARD_SNOWY_EVT2
+#include "board_snowy_evt2.h" // prototypes for Snowy EVT2
+#elif BOARD_SPALDING
+#include "board_snowy_evt2.h" // Close enough
+#else
+#error "Unknown board definition"
+#endif

platform/snowy/boot/src/board/board_snowy_bb.h

@@ -0,0 +1,160 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "util/misc.h"
+
+#define USE_PARALLEL_FLASH
+#define HAS_ACCESSORY_CONNECTOR
+#define BOARD_HAS_PMIC
+
+#define BOARD_I2C_BUS_COUNT (ARRAY_LENGTH(SNOWY_BB_I2C_BUS_CONFIGS))
+
+extern void snowy_i2c_rail_1_ctl_fn(bool enable);
+
+static const I2cBusConfig SNOWY_BB_I2C_BUS_CONFIGS[] = {
+  // labelled 1V8_I2C on the schematic
+  [0] = {
+    .i2c = I2C1,
+    .i2c_scl = { GPIOB, GPIO_Pin_6, GPIO_PinSource6, GPIO_AF_I2C1 },
+    .i2c_sda = { GPIOB, GPIO_Pin_9, GPIO_PinSource9, GPIO_AF_I2C1 },
+    .clock_speed = 400000,
+    .duty_cycle = I2C_DutyCycle_16_9,
+    .clock_ctrl = RCC_APB1Periph_I2C1,
+    .ev_irq_channel = I2C1_EV_IRQn,
+    .er_irq_channel = I2C1_ER_IRQn,
+  },
+  // labelled 2V5_I2C on the schematic
+  [1] = {
+    .i2c = I2C2,
+    .i2c_scl = { GPIOF, GPIO_Pin_1, GPIO_PinSource1, GPIO_AF_I2C2 },
+    .i2c_sda = { GPIOF, GPIO_Pin_0, GPIO_PinSource0, GPIO_AF_I2C2 },
+    .clock_speed = 400000,
+    .duty_cycle = I2C_DutyCycle_2,
+    .clock_ctrl = RCC_APB1Periph_I2C2,
+    .ev_irq_channel = I2C2_EV_IRQn,
+    .er_irq_channel = I2C2_ER_IRQn,
+    .rail_ctl_fn = snowy_i2c_rail_1_ctl_fn
+  }
+};
+
+static const uint8_t SNOWY_BB_I2C_DEVICE_MAP[] = {
+  [I2C_DEVICE_LIS3DH] = 0,
+  [I2C_DEVICE_MAG3110] = 1,
+  [I2C_DEVICE_MFI] = 1,
+  [I2C_DEVICE_MAX14690] = 0
+};
+
+static const BoardConfig BOARD_CONFIG = {
+  .i2c_bus_configs = SNOWY_BB_I2C_BUS_CONFIGS,
+  .i2c_bus_count = BOARD_I2C_BUS_COUNT,
+  .i2c_device_map = SNOWY_BB_I2C_DEVICE_MAP,
+  .i2c_device_count = ARRAY_LENGTH(SNOWY_BB_I2C_DEVICE_MAP),
+
+  .has_ambient_light_sensor = true,
+  .ambient_light_dark_threshold = 3000,
+  .photo_en = { GPIOA, GPIO_Pin_3, true },
+  .light_level = { GPIOA, GPIO_Pin_2, ADC_Channel_2 },
+
+  .dbgserial_int = { EXTI_PortSourceGPIOC, 12 },
+
+  .accessory_power_en = { GPIOF, GPIO_Pin_13, true },
+  .accessory_rxtx_afcfg = { GPIOE, GPIO_Pin_1, GPIO_PinSource1, GPIO_AF_UART8 },
+  .accessory_uart = UART8,
+  .accessory_exti = { EXTI_PortSourceGPIOE, 0 },
+
+  .bt_controller = CC2564A,
+  .bt_shutdown = { GPIOC, GPIO_Pin_8, false},
+  .bt_cts_int = { GPIOA, GPIO_Pin_11, false},
+  .bt_cts_exti = { EXTI_PortSourceGPIOA, 11 },
+
+  .mfi_reset_pin = { GPIOF, GPIO_Pin_11 },
+
+  // Only used with Sharp displays
+  .lcd_com = { 0 },
+
+  .cdone_int = { EXTI_PortSourceGPIOG, 9 },
+  .intn_int = { EXTI_PortSourceGPIOG, 10 },
+
+  .power_5v0_options = OptionNotPresent,
+  .power_ctl_5v0 = { 0 },
+
+  .backlight_options = BacklightPinPwm,
+  .backlight_ctl = { GPIOB, GPIO_Pin_14, true },
+  .backlight_timer = {
+    .peripheral = TIM12,
+    .config_clock = RCC_APB1Periph_TIM12,
+    .init = TIM_OC1Init,
+    .preload = TIM_OC1PreloadConfig
+  },
+  .backlight_afcfg = { GPIOB, GPIO_Pin_14, GPIO_PinSource14, GPIO_AF_TIM12 },
+
+  .has_mic = true,
+  .mic_config = {
+    .i2s_ck = { GPIOB, GPIO_Pin_10, GPIO_PinSource10, GPIO_AF_SPI2 },
+    .i2s_sd = { GPIOB, GPIO_Pin_15, GPIO_PinSource15, GPIO_AF_SPI2 },
+    .dma_stream = DMA1_Stream3,
+    .dma_channel = DMA_Channel_0,
+    .dma_channel_irq = DMA1_Stream3_IRQn,
+    .dma_clock_ctrl = RCC_AHB1Periph_DMA1,
+    .spi = SPI2,
+    .spi_clock_ctrl = RCC_APB1Periph_SPI2
+  },
+};
+
+static const BoardConfigButton BOARD_CONFIG_BUTTON = {
+  .buttons = {
+    [BUTTON_ID_BACK]    = { "Back",   GPIOG, GPIO_Pin_4, { EXTI_PortSourceGPIOG, 4 }, GPIO_PuPd_NOPULL },
+    [BUTTON_ID_UP]      = { "Up",     GPIOG, GPIO_Pin_3, { EXTI_PortSourceGPIOG, 3 }, GPIO_PuPd_NOPULL },
+    [BUTTON_ID_SELECT]  = { "Select", GPIOG, GPIO_Pin_1, { EXTI_PortSourceGPIOG, 1 }, GPIO_PuPd_NOPULL },
+    [BUTTON_ID_DOWN]    = { "Down",   GPIOG, GPIO_Pin_2, { EXTI_PortSourceGPIOG, 2 }, GPIO_PuPd_NOPULL },
+  },
+
+  .button_com = { 0 },
+};
+
+static const BoardConfigPower BOARD_CONFIG_POWER = {
+  .pmic_int = { EXTI_PortSourceGPIOG, 7 },
+
+  .battery_vmon = { GPIOA, GPIO_Pin_1, ADC_Channel_1 },
+
+  .vusb_stat = { .gpio = GPIO_Port_NULL, },
+  .chg_stat = { GPIO_Port_NULL },
+  .chg_fast = { GPIO_Port_NULL },
+  .chg_en = { GPIO_Port_NULL },
+
+  .has_vusb_interrupt = false,
+
+  .wake_on_usb_power = false,
+
+  .charging_status_led_voltage_compensation = 0,
+
+  .low_power_threshold = 5,
+};
+
+static const BoardConfigVibe BOARD_CONFIG_VIBE = {
+  .vibe_options = VibePinPwm,
+  .vibe_ctl = { GPIOF, GPIO_Pin_4, true },
+  .vibe_pwm = { GPIOB, GPIO_Pin_8, true },
+  .vibe_timer = {
+    .peripheral = TIM10,
+    .config_clock = RCC_APB2Periph_TIM10,
+    .init = TIM_OC1Init,
+    .preload = TIM_OC1PreloadConfig
+  },
+  .vibe_afcfg = { GPIOB, GPIO_Pin_8, GPIO_PinSource8, GPIO_AF_TIM10 },
+};

platform/snowy/boot/src/board/board_snowy_evt.h

@@ -0,0 +1,202 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "util/misc.h"
+#include "drivers/accel.h"
+#include "drivers/imu/bmi160/bmi160.h"
+
+#include "stm32f4xx_rcc.h"
+#include "stm32f4xx_gpio.h"
+#include "stm32f4xx_exti.h"
+#include "stm32f4xx_syscfg.h"
+#include "stm32f4xx_i2c.h"
+
+#define USE_PARALLEL_FLASH
+#define HAS_ACCESSORY_CONNECTOR
+#define BOARD_HAS_PMIC
+
+#define BOARD_I2C_BUS_COUNT (ARRAY_LENGTH(SNOWY_EVT_I2C_BUS_CONFIGS))
+
+extern void snowy_i2c_rail_1_ctl_fn(bool enable);
+
+static const I2cBusConfig SNOWY_EVT_I2C_BUS_CONFIGS[] = {
+  // Listed as I2C_PMIC on the schematic, runs at 1.8V
+  [0] = {
+      .i2c = I2C1,
+      .i2c_scl = { GPIOB, GPIO_Pin_6, GPIO_PinSource6, GPIO_AF_I2C1 },
+      .i2c_sda = { GPIOB, GPIO_Pin_9, GPIO_PinSource9, GPIO_AF_I2C1 },
+      .clock_speed = 400000,
+      .duty_cycle = I2C_DutyCycle_16_9,
+      .clock_ctrl = RCC_APB1Periph_I2C1,
+      .ev_irq_channel = I2C1_EV_IRQn,
+      .er_irq_channel = I2C1_ER_IRQn,
+  },
+  // Listed as I2C_MFI on the schematic, runs at 1.8V
+  [1] = {
+      .i2c = I2C2,
+      .i2c_scl = { GPIOF, GPIO_Pin_1, GPIO_PinSource1, GPIO_AF_I2C2 },
+      .i2c_sda = { GPIOF, GPIO_Pin_0, GPIO_PinSource0, GPIO_AF_I2C2 },
+      .clock_speed = 400000,
+      .duty_cycle = I2C_DutyCycle_2,
+      .clock_ctrl = RCC_APB1Periph_I2C2,
+      .ev_irq_channel = I2C2_EV_IRQn,
+      .er_irq_channel = I2C2_ER_IRQn,
+      .rail_ctl_fn = snowy_i2c_rail_1_ctl_fn
+  }
+};
+
+static const uint8_t SNOWY_EVT_I2C_DEVICE_MAP[] = {
+  [I2C_DEVICE_MFI] = 1,
+  [I2C_DEVICE_MAX14690] = 0
+};
+
+static const BoardConfig BOARD_CONFIG = {
+  .i2c_bus_configs = SNOWY_EVT_I2C_BUS_CONFIGS,
+  .i2c_bus_count = BOARD_I2C_BUS_COUNT,
+  .i2c_device_map = SNOWY_EVT_I2C_DEVICE_MAP,
+  .i2c_device_count = ARRAY_LENGTH(SNOWY_EVT_I2C_DEVICE_MAP),
+
+  .has_ambient_light_sensor = true,
+  .ambient_light_dark_threshold = 3000,
+  .photo_en = { GPIOA, GPIO_Pin_3, true },
+  .light_level = { GPIOA, GPIO_Pin_2, ADC_Channel_2 },
+
+  .dbgserial_int = { EXTI_PortSourceGPIOC, 12 },
+
+  .accessory_power_en = { GPIOF, GPIO_Pin_13, true },
+  .accessory_rxtx_afcfg = { GPIOE, GPIO_Pin_1, GPIO_PinSource1, GPIO_AF_UART8 },
+  .accessory_uart = UART8,
+  .accessory_exti = { EXTI_PortSourceGPIOE, 0 },
+
+  .bt_controller = CC2564B,
+  .bt_shutdown = { GPIOC, GPIO_Pin_8, false},
+  .bt_cts_int = { GPIOA, GPIO_Pin_11, false},
+  .bt_cts_exti = { EXTI_PortSourceGPIOA, 11 },
+
+  .mfi_reset_pin = { GPIOF, GPIO_Pin_11 },
+
+  // Only used with Sharp displays
+  .lcd_com = { 0 },
+
+  .cdone_int = { EXTI_PortSourceGPIOG, 9 },
+  .intn_int = { EXTI_PortSourceGPIOG, 10 },
+
+  .power_5v0_options = OptionNotPresent,
+  .power_ctl_5v0 = { 0 },
+
+  .backlight_options = BacklightPinPwm,
+  .backlight_ctl = { GPIOB, GPIO_Pin_14, true },
+  .backlight_timer = {
+    .peripheral = TIM12,
+    .config_clock = RCC_APB1Periph_TIM12,
+    .init = TIM_OC1Init,
+    .preload = TIM_OC1PreloadConfig
+  },
+  .backlight_afcfg = { GPIOB, GPIO_Pin_14, GPIO_PinSource14, GPIO_AF_TIM12 },
+
+  .has_mic = true,
+  .mic_config = {
+    .i2s_ck = { GPIOB, GPIO_Pin_10, GPIO_PinSource10, GPIO_AF_SPI2 },
+    .i2s_sd = { GPIOB, GPIO_Pin_15, GPIO_PinSource15, GPIO_AF_SPI2 },
+    .dma_stream = DMA1_Stream3,
+    .dma_channel = DMA_Channel_0,
+    .dma_channel_irq = DMA1_Stream3_IRQn,
+    .dma_clock_ctrl = RCC_AHB1Periph_DMA1,
+    .spi = SPI2,
+    .spi_clock_ctrl = RCC_APB1Periph_SPI2,
+
+    .mic_gpio_power = { GPIOF, GPIO_Pin_5, true }
+  },
+};
+
+static const BoardConfigButton BOARD_CONFIG_BUTTON = {
+  .buttons = {
+    [BUTTON_ID_BACK]    = { "Back",   GPIOG, GPIO_Pin_1, { EXTI_PortSourceGPIOG, 1 }, GPIO_PuPd_UP },
+    [BUTTON_ID_UP]      = { "Up",     GPIOG, GPIO_Pin_2, { EXTI_PortSourceGPIOG, 2 }, GPIO_PuPd_UP },
+    [BUTTON_ID_SELECT]  = { "Select", GPIOG, GPIO_Pin_3, { EXTI_PortSourceGPIOG, 3 }, GPIO_PuPd_UP },
+    [BUTTON_ID_DOWN]    = { "Down",   GPIOG, GPIO_Pin_4, { EXTI_PortSourceGPIOG, 4 }, GPIO_PuPd_NOPULL },
+  },
+
+  .button_com = { 0 },
+};
+
+static const BoardConfigPower BOARD_CONFIG_POWER = {
+  .pmic_int = { EXTI_PortSourceGPIOG, 7 },
+
+  .battery_vmon = { GPIOA, GPIO_Pin_1, ADC_Channel_1 },
+
+  .vusb_stat = { .gpio = GPIO_Port_NULL, },
+  .chg_stat = { GPIO_Port_NULL },
+  .chg_fast = { GPIO_Port_NULL },
+  .chg_en = { GPIO_Port_NULL },
+  .has_vusb_interrupt = false,
+
+  .wake_on_usb_power = false,
+
+  .charging_status_led_voltage_compensation = 0,
+
+  .low_power_threshold = 5,
+};
+
+static const BoardConfigAccel BOARD_CONFIG_ACCEL = {
+  // FIXME: We no longer use i2c for our accel, this will need work.
+  .accel_config = {
+      .i2c_address = 0x32,
+
+      .axes_offsets[ACCEL_AXIS_X] = 1,
+      .axes_offsets[ACCEL_AXIS_Y] = 0,
+      .axes_offsets[ACCEL_AXIS_Z] = 2,
+      .axes_inverts[ACCEL_AXIS_X] = true,
+      .axes_inverts[ACCEL_AXIS_Y] = false,
+      .axes_inverts[ACCEL_AXIS_Z] = true,
+  },
+  .accel_ints = {
+    [0] = { EXTI_PortSourceGPIOG, 5 },
+    [1] = { EXTI_PortSourceGPIOG, 6 }
+  },
+};
+
+static const BoardConfigMag BOARD_CONFIG_MAG = {
+  // FIXME: We need to talk to the compass through the accel now as it's hanging of the accel's i2c bus.
+  // This will need work.
+  .mag_config = {
+    .i2c_address = 0x0e << 1,
+
+    // FIXME: ?
+    .axes_offsets[ACCEL_AXIS_X] = 1,
+    .axes_offsets[ACCEL_AXIS_Y] = 0,
+    .axes_offsets[ACCEL_AXIS_Z] = 2,
+    .axes_inverts[ACCEL_AXIS_X] = false,
+    .axes_inverts[ACCEL_AXIS_Y] = true,
+    .axes_inverts[ACCEL_AXIS_Z] = true,
+  },
+  .mag_int = { EXTI_PortSourceGPIOF, 14 },
+};
+
+static const BoardConfigVibe BOARD_CONFIG_VIBE = {
+  .vibe_options = VibePinPwm,
+  .vibe_ctl = { GPIOF, GPIO_Pin_4, true },
+  .vibe_pwm = { GPIOB, GPIO_Pin_8, true },
+  .vibe_timer = {
+    .peripheral = TIM10,
+    .config_clock = RCC_APB2Periph_TIM10,
+    .init = TIM_OC1Init,
+    .preload = TIM_OC1PreloadConfig
+  },
+  .vibe_afcfg = { GPIOB, GPIO_Pin_8, GPIO_PinSource8, GPIO_AF_TIM10 },
+};

platform/snowy/boot/src/board/board_snowy_evt2.h

@@ -0,0 +1,158 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "util/misc.h"
+
+#define USE_PARALLEL_FLASH
+#define HAS_ACCESSORY_CONNECTOR
+#define BOARD_HAS_PMIC
+
+#define BOARD_I2C_BUS_COUNT (ARRAY_LENGTH(SNOWY_EVT2_I2C_BUS_CONFIGS))
+
+extern void snowy_i2c_rail_1_ctl_fn(bool enable);
+
+static const I2cBusConfig SNOWY_EVT2_I2C_BUS_CONFIGS[] = {
+  // Listed as I2C_PMIC_MAG on the schematic, runs at 1.8V
+  [0] = {
+    .i2c = I2C1,
+    .i2c_scl = { GPIOB, GPIO_Pin_6, GPIO_PinSource6, GPIO_AF_I2C1 },
+    .i2c_sda = { GPIOB, GPIO_Pin_9, GPIO_PinSource9, GPIO_AF_I2C1 },
+    .clock_speed = 400000,
+    .duty_cycle = I2C_DutyCycle_16_9,
+    .clock_ctrl = RCC_APB1Periph_I2C1,
+    .ev_irq_channel = I2C1_EV_IRQn,
+    .er_irq_channel = I2C1_ER_IRQn,
+  },
+  // Listed as I2C_MFI on the schematic, runs at 1.8V
+  [1] = {
+    .i2c = I2C2,
+    .i2c_scl = { GPIOF, GPIO_Pin_1, GPIO_PinSource1, GPIO_AF_I2C2 },
+    .i2c_sda = { GPIOF, GPIO_Pin_0, GPIO_PinSource0, GPIO_AF_I2C2 },
+    .clock_speed = 400000,
+    .duty_cycle = I2C_DutyCycle_2,
+    .clock_ctrl = RCC_APB1Periph_I2C2,
+    .ev_irq_channel = I2C2_EV_IRQn,
+    .er_irq_channel = I2C2_ER_IRQn,
+    .rail_ctl_fn = snowy_i2c_rail_1_ctl_fn
+  }
+};
+
+static const uint8_t SNOWY_EVT2_I2C_DEVICE_MAP[] = {
+  [I2C_DEVICE_MAG3110] = 0,
+  [I2C_DEVICE_MFI] = 1,
+  [I2C_DEVICE_MAX14690] = 0
+};
+
+static const BoardConfig BOARD_CONFIG = {
+  .i2c_bus_configs = SNOWY_EVT2_I2C_BUS_CONFIGS,
+  .i2c_bus_count = BOARD_I2C_BUS_COUNT,
+  .i2c_device_map = SNOWY_EVT2_I2C_DEVICE_MAP,
+  .i2c_device_count = ARRAY_LENGTH(SNOWY_EVT2_I2C_DEVICE_MAP),
+
+  .has_ambient_light_sensor = true,
+  .ambient_light_dark_threshold = 3000,
+  .photo_en = { GPIOA, GPIO_Pin_3, true },
+  .light_level = { GPIOA, GPIO_Pin_2, ADC_Channel_2 },
+
+  .dbgserial_int = { EXTI_PortSourceGPIOC, 12 },
+
+  .accessory_power_en = { GPIOF, GPIO_Pin_13, true },
+  .accessory_rxtx_afcfg = { GPIOE, GPIO_Pin_1, GPIO_PinSource1, GPIO_AF_UART8 },
+  .accessory_uart = UART8,
+  .accessory_exti = { EXTI_PortSourceGPIOE, 0 },
+
+  .bt_controller = CC2564B,
+  .bt_shutdown = { GPIOB, GPIO_Pin_12, false},
+  .bt_cts_int = { GPIOA, GPIO_Pin_11, false},
+  .bt_cts_exti = { EXTI_PortSourceGPIOA, 11 },
+
+  // Only used with Sharp displays
+  .lcd_com = { 0 },
+
+  .cdone_int = { EXTI_PortSourceGPIOG, 9 },
+  .intn_int = { EXTI_PortSourceGPIOG, 10 },
+
+  .power_5v0_options = OptionNotPresent,
+  .power_ctl_5v0 = { 0 },
+
+  .backlight_options = BacklightPinPwm,
+  .backlight_ctl = { GPIOB, GPIO_Pin_14, true },
+  .backlight_timer = {
+    .peripheral = TIM12,
+    .config_clock = RCC_APB1Periph_TIM12,
+    .init = TIM_OC1Init,
+    .preload = TIM_OC1PreloadConfig
+  },
+  .backlight_afcfg = { GPIOB, GPIO_Pin_14, GPIO_PinSource14, GPIO_AF_TIM12 },
+
+  .has_mic = true,
+  .mic_config = {
+    .i2s_ck = { GPIOB, GPIO_Pin_10, GPIO_PinSource10, GPIO_AF_SPI2 },
+    .i2s_sd = { GPIOB, GPIO_Pin_15, GPIO_PinSource15, GPIO_AF_SPI2 },
+    .dma_stream = DMA1_Stream3,
+    .dma_channel = DMA_Channel_0,
+    .dma_channel_irq = DMA1_Stream3_IRQn,
+    .dma_clock_ctrl = RCC_AHB1Periph_DMA1,
+    .spi = SPI2,
+    .spi_clock_ctrl = RCC_APB1Periph_SPI2,
+
+    .mic_gpio_power = { GPIOF, GPIO_Pin_5, true }
+  },
+};
+
+static const BoardConfigButton BOARD_CONFIG_BUTTON = {
+  .buttons = {
+    [BUTTON_ID_BACK]    = { "Back",   GPIOG, GPIO_Pin_4, { EXTI_PortSourceGPIOG, 4 }, GPIO_PuPd_NOPULL },
+    [BUTTON_ID_UP]      = { "Up",     GPIOG, GPIO_Pin_3, { EXTI_PortSourceGPIOG, 3 }, GPIO_PuPd_UP },
+    [BUTTON_ID_SELECT]  = { "Select", GPIOG, GPIO_Pin_1, { EXTI_PortSourceGPIOG, 1 }, GPIO_PuPd_UP },
+    [BUTTON_ID_DOWN]    = { "Down",   GPIOG, GPIO_Pin_2, { EXTI_PortSourceGPIOG, 2 }, GPIO_PuPd_UP },
+  },
+
+  .button_com = { 0 },
+};
+
+static const BoardConfigPower BOARD_CONFIG_POWER = {
+  .pmic_int = { EXTI_PortSourceGPIOG, 7 },
+
+  .battery_vmon = { GPIOA, GPIO_Pin_1, ADC_Channel_1 },
+
+  .vusb_stat = { .gpio = GPIO_Port_NULL, },
+  .chg_stat = { GPIO_Port_NULL },
+  .chg_fast = { GPIO_Port_NULL },
+  .chg_en = { GPIO_Port_NULL },
+  .has_vusb_interrupt = false,
+
+  .wake_on_usb_power = false,
+
+  .charging_status_led_voltage_compensation = 0,
+
+  .low_power_threshold = 5,
+};
+
+static const BoardConfigVibe BOARD_CONFIG_VIBE = {
+  .vibe_options = VibePinPwm,
+  .vibe_ctl = { GPIOF, GPIO_Pin_4, true },
+  .vibe_pwm = { GPIOB, GPIO_Pin_8, true },
+  .vibe_timer = {
+    .peripheral = TIM10,
+    .config_clock = RCC_APB2Periph_TIM10,
+    .init = TIM_OC1Init,
+    .preload = TIM_OC1PreloadConfig
+  },
+  .vibe_afcfg = { GPIOB, GPIO_Pin_8, GPIO_PinSource8, GPIO_AF_TIM10 },
+};