104 lines
4.6 KiB
C
104 lines
4.6 KiB
C
/*
|
|
* MIT License
|
|
*
|
|
* Copyright (c) 2020 Joey Castillo
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
/// @file watch.h
|
|
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "pins.h"
|
|
|
|
#define SWCLK GPIO(GPIO_PORTA, 30)
|
|
#define SWDIO GPIO(GPIO_PORTA, 31)
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
#include "watch_main_loop.h"
|
|
#endif // __EMSCRIPTEN__
|
|
|
|
/** @mainpage Sensor Watch Documentation
|
|
* @brief This documentation covers most of the functions you will use to interact with the Sensor Watch
|
|
hardware. It is divided into the following sections:
|
|
- @ref rtc - This section covers functions related to the SAM L22's real-time clock peripheral, including
|
|
date, time and alarm functions.
|
|
- @ref slcd - This section covers functions related to the Segment LCD display driver, which is responsible
|
|
for displaying strings of characters and indicators on the main watch display.
|
|
- @ref buttons - This section covers functions related to the three buttons: Light, Mode and Alarm.
|
|
- @ref tcc - This section covers functions related to the LED and piezo buzzer, which are controlled by the
|
|
SAM L22's Timer Counter for Control, or TCC peripheral.
|
|
- @ref adc - This section covers functions related to the SAM L22's analog-to-digital converter, as well as
|
|
configuring and reading values from the five analog-capable pins on the 9-pin connector.
|
|
- @ref gpio - This section covers functions related to general-purpose input and output signals.
|
|
- @ref i2c - This section covers functions related to the SAM L22's built-I2C driver, including configuring
|
|
the I2C bus, putting values directly on the bus and reading data from registers on I2C devices.
|
|
- @ref spi - This section covers functions related to the SAM L22's built-in SPI driver.
|
|
- @ref uart - This section covers functions related to the UART peripheral.
|
|
- @ref deepsleep - This section covers functions related to preparing for and entering BACKUP mode, the
|
|
deepest sleep mode available on the SAM L22.
|
|
*/
|
|
|
|
/** @brief Typedef for a general-purpose callback function.
|
|
*/
|
|
typedef void (*watch_cb_t)(void);
|
|
|
|
#include "watch_rtc.h"
|
|
#include "watch_slcd.h"
|
|
#include "watch_extint.h"
|
|
#include "watch_tcc.h"
|
|
#include "watch_adc.h"
|
|
#include "watch_gpio.h"
|
|
// #include "watch_i2c.h"
|
|
// #include "watch_spi.h"
|
|
// #include "watch_uart.h"
|
|
// #include "watch_storage.h"
|
|
// #include "watch_deepsleep.h"
|
|
|
|
/** @brief Interrupt handler for the SYSTEM interrupt, which handles MCLK,
|
|
* OSC32KCTRL, OSCCTRL, PAC, PM and SUPC.
|
|
* @details We use this to detect when the system voltage has dipped below
|
|
* 2.6V, which means it's time to disable the voltage regulator's
|
|
* high-efficiency mode, which only works down to 2.5V.
|
|
*/
|
|
void irq_handler_system(void);
|
|
|
|
/** @brief Resets in the UF2 bootloader mode
|
|
*/
|
|
void watch_reset_to_bootloader(void);
|
|
|
|
/** @brief Call periodically from app main loop to service CDC RX/TX.
|
|
*/
|
|
void cdc_task(void);
|
|
|
|
/** @brief Reads up to len bytes from the USB serial.
|
|
* @param file ignored, you can pass in 0
|
|
* @param ptr pointer to a buffer of at least len bytes
|
|
* @param len the number of bytes you wish to read, max 256.
|
|
* @return The number of bytes read, or zero if no bytes were read.
|
|
*/
|
|
int read(int file, char *ptr, int len);
|
|
|
|
/** @brief Disables the TRNG twice in order to work around silicon erratum 1.16.1.
|
|
* FIXME: find a better place for this, a couple of watch faces need it.
|
|
*/
|
|
void watch_disable_TRNG(void);
|