diff options
Diffstat (limited to 'watch-library/watch/watch.c')
| -rw-r--r-- | watch-library/watch/watch.c | 639 |
1 files changed, 14 insertions, 625 deletions
diff --git a/watch-library/watch/watch.c b/watch-library/watch/watch.c index 659be1c5..d55b61fe 100644 --- a/watch-library/watch/watch.c +++ b/watch-library/watch/watch.c @@ -23,631 +23,20 @@ */ #include "watch.h" -#include "peripheral_clk_config.h" -#include <stdlib.h> - -////////////////////////////////////////////////////////////////////////////////////////// -// User callbacks and other definitions - -ext_irq_cb_t btn_alarm_callback; -ext_irq_cb_t a2_callback; -ext_irq_cb_t d1_callback; +// TODO: this should all live in watch_deepsleep.c, but right now watch_extint.c needs it +// because we're being too clever about the alarm button. static void extwake_callback(uint8_t reason); +ext_irq_cb_t btn_alarm_callback; - -////////////////////////////////////////////////////////////////////////////////////////// -// Initialization - -void _watch_init() { - // disable the LED pin (it may have been enabled by the bootloader) - watch_disable_digital_output(RED); - - // Use switching regulator for lower power consumption. - SUPC->VREG.bit.SEL = 1; - while(!SUPC->STATUS.bit.VREGRDY); - - // External wake depends on RTC; calendar is a required module. - CALENDAR_0_init(); - calendar_enable(&CALENDAR_0); - - // Not sure if this belongs in every app -- is there a power impact? - delay_driver_init(); - - // set up state - btn_alarm_callback = NULL; - a2_callback = NULL; - d1_callback = NULL; -} - - -////////////////////////////////////////////////////////////////////////////////////////// -// Segmented Display - -static const uint8_t Character_Set[] = -{ - 0b00000000, // - 0b00000000, // ! (unused) - 0b00100010, // " - 0b01100011, // # (degree symbol, hash mark doesn't fit) - 0b00000000, // $ (unused) - 0b00000000, // % (unused) - 0b01000100, // & ("lowercase 7" for positions 4 and 6) - 0b00100000, // ' - 0b00111001, // ( - 0b00001111, // ) - 0b00000000, // * (unused) - 0b11000000, // + (only works in position 0) - 0b00000100, // , - 0b01000000, // - - 0b01000000, // . (same as -, semantically most useful) - 0b00010010, // / - 0b00111111, // 0 - 0b00000110, // 1 - 0b01011011, // 2 - 0b01001111, // 3 - 0b01100110, // 4 - 0b01101101, // 5 - 0b01111101, // 6 - 0b00000111, // 7 - 0b01111111, // 8 - 0b01101111, // 9 - 0b00000000, // : (unused) - 0b00000000, // ; (unused) - 0b01011000, // < - 0b01001000, // = - 0b01001100, // > - 0b01010011, // ? - 0b11111111, // @ (all segments on) - 0b01110111, // A - 0b01111111, // B - 0b00111001, // C - 0b00111111, // D - 0b01111001, // E - 0b01110001, // F - 0b00111101, // G - 0b01110110, // H - 0b10001001, // I (only works in position 0) - 0b00001110, // J - 0b01110101, // K - 0b00111000, // L - 0b10110111, // M (only works in position 0) - 0b00110111, // N - 0b00111111, // O - 0b01110011, // P - 0b01100111, // Q - 0b11110111, // R (only works in position 1) - 0b01101101, // S - 0b10000001, // T (only works in position 0; set (1, 12) to make it work in position 1) - 0b00111110, // U - 0b00111110, // V - 0b10111110, // W (only works in position 0) - 0b01111110, // X - 0b01101110, // Y - 0b00011011, // Z - 0b00111001, // [ - 0b00100100, // backslash - 0b00001111, // ] - 0b00100011, // ^ - 0b00001000, // _ - 0b00000010, // ` - 0b01011111, // a - 0b01111100, // b - 0b01011000, // c - 0b01011110, // d - 0b01111011, // e - 0b01110001, // f - 0b01101111, // g - 0b01110100, // h - 0b00010000, // i - 0b01000010, // j (appears as superscript to work in more positions) - 0b01110101, // k - 0b00110000, // l - 0b10110111, // m (only works in position 0) - 0b01010100, // n - 0b01011100, // o - 0b01110011, // p - 0b01100111, // q - 0b01010000, // r - 0b01101101, // s - 0b01111000, // t - 0b01100010, // u (appears as superscript to work in more positions) - 0b01100010, // v (appears as superscript to work in more positions) - 0b10111110, // w (only works in position 0) - 0b01111110, // x - 0b01101110, // y - 0b00011011, // z - 0b00111001, // { - 0b00110000, // | - 0b00001111, // } - 0b00000001, // ~ -}; - -static const uint64_t Segment_Map[] = { - 0x4e4f0e8e8f8d4d0d, // Position 0, mode - 0xc8c4c4c8b4b4b0b, // Position 1, mode (Segments B and C shared, as are segments E and F) - 0xc049c00a49890949, // Position 2, day of month (Segments A, D, G shared; missing segment F) - 0xc048088886874707, // Position 3, day of month - 0xc053921252139352, // Position 4, clock hours (Segments A and D shared) - 0xc054511415559594, // Position 5, clock hours - 0xc057965616179716, // Position 6, clock minutes (Segments A and D shared) - 0xc041804000018a81, // Position 7, clock minutes - 0xc043420203048382, // Position 8, clock seconds - 0xc045440506468584, // Position 9, clock seconds -}; - -static const uint8_t Num_Chars = 10; - -static const uint32_t IndicatorSegments[6] = { - SLCD_SEGID(0, 17), // WATCH_INDICATOR_SIGNAL - SLCD_SEGID(0, 16), // WATCH_INDICATOR_BELL - SLCD_SEGID(2, 17), // WATCH_INDICATOR_PM - SLCD_SEGID(2, 16), // WATCH_INDICATOR_24H - SLCD_SEGID(1, 10), // WATCH_INDICATOR_LAP -}; - -void watch_enable_display() { - SEGMENT_LCD_0_init(); - slcd_sync_enable(&SEGMENT_LCD_0); -} - -inline void watch_set_pixel(uint8_t com, uint8_t seg) { - slcd_sync_seg_on(&SEGMENT_LCD_0, SLCD_SEGID(com, seg)); -} - -inline void watch_clear_pixel(uint8_t com, uint8_t seg) { - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(com, seg)); -} - -void watch_display_character(uint8_t character, uint8_t position) { - // handle lowercase 7 if needed - if (character == '7' && (position == 4 || position == 6)) character = '&'; - - uint64_t segmap = Segment_Map[position]; - uint64_t segdata = Character_Set[character - 0x20]; - - for (int i = 0; i < 8; i++) { - uint8_t com = (segmap & 0xFF) >> 6; - if (com > 2) { - // COM3 means no segment exists; skip it. - segmap = segmap >> 8; - segdata = segdata >> 1; - continue; - } - uint8_t seg = segmap & 0x3F; - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(com, seg)); - if (segdata & 1) slcd_sync_seg_on(&SEGMENT_LCD_0, SLCD_SEGID(com, seg)); - segmap = segmap >> 8; - segdata = segdata >> 1; - } -} - -void watch_display_string(char *string, uint8_t position) { - size_t i = 0; - while(string[i] != 0) { - watch_display_character(string[i], position + i); - i++; - if (i >= Num_Chars) break; - } -} - -inline void watch_set_colon() { - slcd_sync_seg_on(&SEGMENT_LCD_0, SLCD_SEGID(1, 16)); -} - -inline void watch_clear_colon() { - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(1, 16)); -} - -inline void watch_set_indicator(WatchIndicatorSegment indicator) { - slcd_sync_seg_on(&SEGMENT_LCD_0, IndicatorSegments[indicator]); -} - -inline void watch_clear_indicator(WatchIndicatorSegment indicator) { - slcd_sync_seg_off(&SEGMENT_LCD_0, IndicatorSegments[indicator]); -} - -void watch_clear_all_indicators() { - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(2, 17)); - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(2, 16)); - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(0, 17)); - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(0, 16)); - slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(1, 10)); -} - - -////////////////////////////////////////////////////////////////////////////////////////// -// Buttons - -void watch_enable_buttons() { - EXTERNAL_IRQ_0_init(); -} - -void watch_register_button_callback(const uint8_t pin, ext_irq_cb_t callback) { - if (pin == BTN_ALARM) { - gpio_set_pin_direction(BTN_ALARM, GPIO_DIRECTION_IN); - gpio_set_pin_pull_mode(BTN_ALARM, GPIO_PULL_DOWN); - gpio_set_pin_function(BTN_ALARM, PINMUX_PA02G_RTC_IN2); - btn_alarm_callback = callback; - _extwake_register_callback(&CALENDAR_0.device, extwake_callback); - } else { - ext_irq_register(pin, callback); - } -} - -////////////////////////////////////////////////////////////////////////////////////////// -// LED - -bool PWM_0_enabled = false; - -void watch_enable_led(bool pwm) { - if (pwm) { - if (PWM_0_enabled) return; - - PWM_0_init(); - pwm_set_parameters(&PWM_0, 10000, 0); - pwm_enable(&PWM_0); - - PWM_0_enabled = true; - } else { - watch_enable_digital_output(RED); - watch_enable_digital_output(GREEN); - } - watch_set_led_off(); -} - -void watch_disable_led(bool pwm) { - if (pwm) { - if (!PWM_0_enabled) return; - pwm_disable(&PWM_0); - PWM_0_enabled = false; - } - - watch_disable_digital_output(RED); - watch_disable_digital_output(GREEN); -} - -void watch_set_led_color(uint16_t red, uint16_t green) { - if (PWM_0_enabled) { - TC3->COUNT16.CC[0].reg = red; - TC3->COUNT16.CC[1].reg = green; - } -} - -void watch_set_led_red() { - if (PWM_0_enabled) { - watch_set_led_color(65535, 0); - } else { - watch_set_pin_level(RED, true); - watch_set_pin_level(GREEN, false); - } -} - -void watch_set_led_green() { - if (PWM_0_enabled) { - watch_set_led_color(65535, 0); - } else { - watch_set_pin_level(RED, false); - watch_set_pin_level(GREEN, true); - } -} - -void watch_set_led_yellow() { - if (PWM_0_enabled) { - watch_set_led_color(65535, 65535); - } else { - watch_set_pin_level(RED, true); - watch_set_pin_level(GREEN, true); - } -} - -void watch_set_led_off() { - if (PWM_0_enabled) { - watch_set_led_color(0, 0); - } else { - watch_set_pin_level(RED, false); - watch_set_pin_level(GREEN, false); - } -} - - -////////////////////////////////////////////////////////////////////////////////////////// -// Buzzer - -inline void watch_enable_buzzer() { - PWM_1_init(); -} - -inline void watch_set_buzzer_period(uint32_t period) { - pwm_set_parameters(&PWM_1, period, period / 2); -} - -inline void watch_set_buzzer_on() { - pwm_enable(&PWM_1); -} - -inline void watch_set_buzzer_off() { - pwm_disable(&PWM_1); -} - -const uint16_t NotePeriods[108] = {31047, 29301, 27649, 26079, 24617, 23224, 21923, 20683, 19515, 18418, 17377, 16399, 15477, 14603, 13780, 13004, 12272, 11580, 10926, 10311, 9730, 9181, 8664, 8175, 7714, 7280, 6869, 6483, 6117, 5772, 5447, 5140, 4850, 4577, 4319, 4076, 3846, 3629, 3425, 3232, 3050, 2878, 2715, 2562, 2418, 2282, 2153, 2032, 1917, 1809, 1707, 1611, 1520, 1435, 1354, 1277, 1205, 1137, 1073, 1013, 956, 902, 851, 803, 758, 715, 675, 637, 601, 567, 535, 505, 476, 450, 424, 400, 378, 357, 336, 317, 300, 283, 267, 252, 238, 224, 212, 200, 188, 178, 168, 158, 149, 141, 133, 125, 118, 112, 105, 99, 94, 89, 84, 79, 74, 70, 66, 63}; - -void watch_buzzer_play_note(BuzzerNote note, uint16_t duration_ms) { - if (note == BUZZER_NOTE_REST) { - watch_set_buzzer_off(); - } else { - pwm_set_parameters(&PWM_1, NotePeriods[note], NotePeriods[note] / 2); - watch_set_buzzer_on(); - } - delay_ms(duration_ms); - watch_set_buzzer_off(); -} - -////////////////////////////////////////////////////////////////////////////////////////// -// Real-time Clock - -bool _watch_rtc_is_enabled() { - return RTC->MODE0.CTRLA.bit.ENABLE; -} - -void watch_set_date_time(struct calendar_date_time date_time) { - calendar_set_date(&CALENDAR_0, &date_time.date); - calendar_set_time(&CALENDAR_0, &date_time.time); -} - -void watch_get_date_time(struct calendar_date_time *date_time) { - calendar_get_date_time(&CALENDAR_0, date_time); -} - -void watch_register_tick_callback(ext_irq_cb_t callback) { - _prescaler_register_callback(&CALENDAR_0.device, callback); -} - -////////////////////////////////////////////////////////////////////////////////////////// -// Analog Input - -static bool ADC_0_ENABLED = false; - -void watch_enable_analog(const uint8_t pin) { - if (!ADC_0_ENABLED) ADC_0_init(); - ADC_0_ENABLED = true; - - gpio_set_pin_direction(pin, GPIO_DIRECTION_OFF); - switch (pin) { - case A0: - gpio_set_pin_function(A0, PINMUX_PB04B_ADC_AIN12); - break; - case A1: - gpio_set_pin_function(A1, PINMUX_PB01B_ADC_AIN9); - break; - case A2: - gpio_set_pin_function(A2, PINMUX_PB02B_ADC_AIN10); - break; - default: - return; - } -} - -////////////////////////////////////////////////////////////////////////////////////////// -// Digital IO - -void watch_enable_digital_input(const uint8_t pin) { - gpio_set_pin_direction(pin, GPIO_DIRECTION_IN); - gpio_set_pin_function(pin, GPIO_PIN_FUNCTION_OFF); -} - -void watch_enable_pull_up(const uint8_t pin) { - gpio_set_pin_pull_mode(pin, GPIO_PULL_UP); -} - -void watch_enable_pull_down(const uint8_t pin) { - gpio_set_pin_pull_mode(pin, GPIO_PULL_DOWN); -} - -bool watch_get_pin_level(const uint8_t pin) { - return gpio_get_pin_level(pin); -} - -void watch_enable_digital_output(const uint8_t pin) { - gpio_set_pin_direction(pin, GPIO_DIRECTION_OUT); - gpio_set_pin_function(pin, GPIO_PIN_FUNCTION_OFF); -} - -void watch_disable_digital_output(const uint8_t pin) { - gpio_set_pin_direction(pin, GPIO_DIRECTION_OFF); -} - -void watch_set_pin_level(const uint8_t pin, const bool level) { - gpio_set_pin_level(pin, level); -} - -////////////////////////////////////////////////////////////////////////////////////////// -// I2C - -struct io_descriptor *I2C_0_io; - -void watch_enable_i2c() { - I2C_0_init(); - i2c_m_sync_get_io_descriptor(&I2C_0, &I2C_0_io); - i2c_m_sync_enable(&I2C_0); -} - -void watch_i2c_send(int16_t addr, uint8_t *buf, uint16_t length) { - i2c_m_sync_set_periphaddr(&I2C_0, addr, I2C_M_SEVEN); - io_write(I2C_0_io, buf, length); -} - -void watch_i2c_receive(int16_t addr, uint8_t *buf, uint16_t length) { - i2c_m_sync_set_periphaddr(&I2C_0, addr, I2C_M_SEVEN); - io_read(I2C_0_io, buf, length); -} - -void watch_i2c_write8(int16_t addr, uint8_t reg, uint8_t data) { - uint8_t buf[2]; - buf[0] = reg; - buf[1] = data; - - watch_i2c_send(addr, (uint8_t *)&buf, 2); -} - -uint8_t watch_i2c_read8(int16_t addr, uint8_t reg) { - uint8_t data; - - watch_i2c_send(addr, (uint8_t *)®, 1); - watch_i2c_receive(addr, (uint8_t *)&data, 1); - - return data; -} - -uint16_t watch_i2c_read16(int16_t addr, uint8_t reg) { - uint16_t data; - - watch_i2c_send(addr, (uint8_t *)®, 1); - watch_i2c_receive(addr, (uint8_t *)&data, 2); - - return data; -} - -uint32_t watch_i2c_read24(int16_t addr, uint8_t reg) { - uint32_t data; - data = 0; - - watch_i2c_send(addr, (uint8_t *)®, 1); - watch_i2c_receive(addr, (uint8_t *)&data, 3); - - return data << 8; -} - -uint32_t watch_i2c_read32(int16_t addr, uint8_t reg) { - uint32_t data; - - watch_i2c_send(addr, (uint8_t *)®, 1); - watch_i2c_receive(addr, (uint8_t *)&data, 4); - - return data; -} - -////////////////////////////////////////////////////////////////////////////////////////// -// Debug UART - -/* - * UART methods are Copyright (c) 2014-2017, Alex Taradov <alex@taradov.com> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -void watch_enable_debug_uart(uint32_t baud) { - uint64_t br = (uint64_t)65536 * (CONF_CPU_FREQUENCY - 16 * baud) / CONF_CPU_FREQUENCY; - - gpio_set_pin_direction(D1, GPIO_DIRECTION_IN); - gpio_set_pin_function(D1, PINMUX_PB00C_SERCOM3_PAD2); - - MCLK->APBCMASK.reg |= MCLK_APBCMASK_SERCOM3; - - GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg = GCLK_PCHCTRL_GEN(0) | GCLK_PCHCTRL_CHEN; - while (0 == (GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg & GCLK_PCHCTRL_CHEN)); - - SERCOM3->USART.CTRLA.reg = - SERCOM_USART_CTRLA_DORD | SERCOM_USART_CTRLA_MODE(1/*USART_INT_CLK*/) | - SERCOM_USART_CTRLA_RXPO(0/*PAD0*/) | SERCOM_USART_CTRLA_TXPO(1/*PAD2*/); - - SERCOM3->USART.CTRLB.reg = SERCOM_USART_CTRLB_RXEN | SERCOM_USART_CTRLB_TXEN | - SERCOM_USART_CTRLB_CHSIZE(0/*8 bits*/); - - SERCOM3->USART.BAUD.reg = (uint16_t)br; - - SERCOM3->USART.CTRLA.reg |= SERCOM_USART_CTRLA_ENABLE; -} - -void watch_debug_putc(char c) { - while (!(SERCOM3->USART.INTFLAG.reg & SERCOM_USART_INTFLAG_DRE)); - SERCOM3->USART.DATA.reg = c; -} - -void watch_debug_puts(char *s) { - while (*s) watch_debug_putc(*s++); -} - -////////////////////////////////////////////////////////////////////////////////////////// -// Deep Sleep - -static void extwake_callback(uint8_t reason) { - if (reason & RTC_TAMPID_TAMPID2) { - if (btn_alarm_callback != NULL) btn_alarm_callback(); - } else if (reason & RTC_TAMPID_TAMPID1) { - if (a2_callback != NULL) a2_callback(); - } else if (reason & RTC_TAMPID_TAMPID0) { - if (d1_callback != NULL) d1_callback(); - } -} - -void watch_register_extwake_callback(uint8_t pin, ext_irq_cb_t callback) { - uint32_t pinmux; - if (pin == D1) { - d1_callback = callback; - pinmux = PINMUX_PB00G_RTC_IN0; - } else if (pin == A2) { - a2_callback = callback; - pinmux = PINMUX_PB02G_RTC_IN1; - } else { - return; - } - gpio_set_pin_direction(pin, GPIO_DIRECTION_IN); - gpio_set_pin_function(pin, pinmux); - _extwake_register_callback(&CALENDAR_0.device, extwake_callback); -} - -void watch_store_backup_data(uint32_t data, uint8_t reg) { - if (reg < 8) { - RTC->MODE0.BKUP[reg].reg = data; - } -} - -uint32_t watch_get_backup_data(uint8_t reg) { - if (reg < 8) { - return RTC->MODE0.BKUP[reg].reg; - } - - return 0; -} - -void watch_enter_deep_sleep() { - // enable and configure the external wake interrupt, if not already set up. - if (btn_alarm_callback == NULL && a2_callback == NULL && d1_callback == NULL) { - gpio_set_pin_direction(BTN_ALARM, GPIO_DIRECTION_IN); - gpio_set_pin_pull_mode(BTN_ALARM, GPIO_PULL_DOWN); - gpio_set_pin_function(BTN_ALARM, PINMUX_PA02G_RTC_IN2); - _extwake_register_callback(&CALENDAR_0.device, extwake_callback); - } - - // disable SLCD - slcd_sync_deinit(&SEGMENT_LCD_0); - hri_mclk_clear_APBCMASK_SLCD_bit(SLCD); - - // TODO: disable other peripherals - - // go into backup sleep mode - sleep(5); -} +#include "watch_rtc.c" +#include "watch_slcd.c" +#include "watch_extint.c" +#include "watch_led.c" +#include "watch_buzzer.c" +#include "watch_adc.c" +#include "watch_gpio.c" +#include "watch_i2c.c" +#include "watch_uart.c" +#include "watch_deepsleep.c" +#include "watch_private.c" |