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author | Alexsander Akers <me@a2.io> | 2022-01-25 15:03:22 -0500 |
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committer | GitHub <noreply@github.com> | 2022-01-25 15:03:22 -0500 |
commit | b8de35658ffd78ad8b22f91ccbbd3d63663afda9 (patch) | |
tree | 1f265ddfcc8e5abf0316b81b15f80bf5c70fa7b7 /watch-library/watch/watch_private.c | |
parent | 9e24f6c336773c7404139ab4db0eaab2f99504e2 (diff) | |
download | Sensor-Watch-b8de35658ffd78ad8b22f91ccbbd3d63663afda9.tar.gz Sensor-Watch-b8de35658ffd78ad8b22f91ccbbd3d63663afda9.tar.bz2 Sensor-Watch-b8de35658ffd78ad8b22f91ccbbd3d63663afda9.zip |
Sensor Watch Simulator (#35)
* Put something on screen
* Use the 32bit watch_date_time repr to pass from JS
* Implement periodic callbacks
* Clear display on enabling
* Hook up watch_set_led_color() to SVG (green-only)
* Make debug output full-width
* Remove default Emscripten canvas
* Implement sleep and button clicks
* Fix time zone conversion bug in beats-time app
* Clean up warnings
* Fix pin levels
* Set time zone to browser value (if available)
* Add basic backup data saving
* Silence format specifier warnings in both targets
* Remove unnecessary, copied files
* Use RTC pointer to clear callbacks (if available)
* Use preprocessor define to avoid hardcoding MOVEMENT_NUM_FACES
* Change each face to const preprocessor definition
* Remove Intl.DateTimeFormat usage
* Update shell.html title, header
* Add touch start/end event handlers on SVG buttons
* Update shell.html
* Update folder structure (shared, simulator, hardware under watch-library)
* Tease out shared components from watch_slcd
* Clean up simulator watch_slcd.c inline JS calls
* Fix missing newlines at end of file
* Add simulator warnings (except format, unused-paremter)
* Implement remaining watch_rtc functions
* Fix button bug on mouse down then drag out
* Implement remaining watch_slcd functions
* Link keyboard events to buttons (for keys A, L, M)
* Rewrite event handling (mouse, touch, keyboard) in C
* Set explicit text UTF-8 charset in shell.html
* Address PR comments
* Remove unused directories from include paths
Diffstat (limited to 'watch-library/watch/watch_private.c')
-rw-r--r-- | watch-library/watch/watch_private.c | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/watch-library/watch/watch_private.c b/watch-library/watch/watch_private.c deleted file mode 100644 index ae2589e7..00000000 --- a/watch-library/watch/watch_private.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * 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. - */ - -#include "watch_private.h" -#include "watch_utility.h" -#include "tusb.h" - -void _watch_init(void) { - // disable the LED pin (it may have been enabled by the bootloader) - watch_disable_digital_output(RED); - - // RAM should be back-biased in STANDBY - PM->STDBYCFG.bit.BBIASHS = 1; - - // Use switching regulator for lower power consumption. - SUPC->VREG.bit.SEL = 1; - while(!SUPC->STATUS.bit.VREGRDY); - - // set up the brownout detector (low battery warning) - NVIC_DisableIRQ(SYSTEM_IRQn); - NVIC_ClearPendingIRQ(SYSTEM_IRQn); - NVIC_EnableIRQ(SYSTEM_IRQn); - SUPC->BOD33.bit.ENABLE = 0; // BOD33 must be disabled to change its configuration - SUPC->BOD33.bit.VMON = 0; // Monitor VDD in active and standby mode - SUPC->BOD33.bit.ACTCFG = 1; // Enable sampling mode when active - SUPC->BOD33.bit.RUNSTDBY = 1; // Enable sampling mode in standby - SUPC->BOD33.bit.STDBYCFG = 1; // Run in standby - SUPC->BOD33.bit.RUNBKUP = 0; // Don't run in backup mode - SUPC->BOD33.bit.PSEL = 0xB; // Check battery level every 4 seconds - SUPC->BOD33.bit.LEVEL = 31; // Detect brownout at 2.5V (1.445V + level * 34mV) - SUPC->BOD33.bit.ACTION = 0x2; // Generate an interrupt when BOD33 is triggered - SUPC->BOD33.bit.HYST = 0; // Disable hysteresis - while(!SUPC->STATUS.bit.B33SRDY); - - // Enable interrupt on BOD33 detect - SUPC->INTENSET.bit.BOD33DET = 1; - SUPC->BOD33.bit.ENABLE = 1; - - // External wake depends on RTC; calendar is a required module. - _watch_rtc_init(); - - // set up state - btn_alarm_callback = NULL; - a2_callback = NULL; - a4_callback = NULL; -} - -static inline void _watch_wait_for_entropy() { - while (!hri_trng_get_INTFLAG_reg(TRNG, TRNG_INTFLAG_DATARDY)); -} - -// this function is called by arc4random to get entropy for random number generation. -// let's use the SAM L22's true random number generator to seed the PRNG! -int getentropy(void *buf, size_t buflen) { - hri_mclk_set_APBCMASK_TRNG_bit(MCLK); - hri_trng_set_CTRLA_ENABLE_bit(TRNG); - - size_t i = 0; - while(i < buflen / 4) { - _watch_wait_for_entropy(); - ((uint32_t *)buf)[i++] = hri_trng_read_DATA_reg(TRNG); - } - - // but what if they asked for an awkward number of bytes? - if (buflen % 4) { - // all good: let's fill in one, two or three bytes at the end of the buffer. - _watch_wait_for_entropy(); - uint32_t last_little_bit = hri_trng_read_DATA_reg(TRNG); - for(size_t j = 0; j <= (buflen % 4); j++) { - ((uint8_t *)buf)[i * 4 + j] = (last_little_bit >> (j * 8)) & 0xFF; - } - } - - hri_trng_clear_CTRLA_ENABLE_bit(TRNG); - hri_mclk_clear_APBCMASK_TRNG_bit(MCLK); - - return 0; -} - -int _gettimeofday(struct timeval *tv, void *tzvp) { - (void)tzvp; - watch_date_time date_time = watch_rtc_get_date_time(); - - // FIXME: this assumes the system time is UTC! Will break for any other time zone. - tv->tv_sec = watch_utility_date_time_to_unix_time(date_time, 0); - tv->tv_usec = 0; - - return 0; -} - -void _watch_enable_tcc(void) { - // clock TCC0 with the main clock (8 MHz) and enable the peripheral clock. - hri_gclk_write_PCHCTRL_reg(GCLK, TCC0_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK0_Val | GCLK_PCHCTRL_CHEN); - hri_mclk_set_APBCMASK_TCC0_bit(MCLK); - // disable and reset TCC0. - hri_tcc_clear_CTRLA_ENABLE_bit(TCC0); - hri_tcc_wait_for_sync(TCC0, TCC_SYNCBUSY_ENABLE); - hri_tcc_write_CTRLA_reg(TCC0, TCC_CTRLA_SWRST); - hri_tcc_wait_for_sync(TCC0, TCC_SYNCBUSY_SWRST); - // divide the clock down to 1 MHz - if (hri_usbdevice_get_CTRLA_ENABLE_bit(USB)) { - // if USB is enabled, we are running an 8 MHz clock. - hri_tcc_write_CTRLA_reg(TCC0, TCC_CTRLA_PRESCALER_DIV8); - } else { - // otherwise it's 4 Mhz. - hri_tcc_write_CTRLA_reg(TCC0, TCC_CTRLA_PRESCALER_DIV4); - } - // We're going to use normal PWM mode, which means period is controlled by PER, and duty cycle is controlled by - // each compare channel's value: - // * Buzzer tones are set by setting PER to the desired period for a given frequency, and CC[1] to half of that - // period (i.e. a square wave with a 50% duty cycle). - // * LEDs on CC[2] and CC[3] can be set to any value from 0 (off) to PER (fully on). - hri_tcc_write_WAVE_reg(TCC0, TCC_WAVE_WAVEGEN_NPWM); - #ifdef WATCH_INVERT_LED_POLARITY - // This is here for the dev board, which uses a common anode LED (instead of common cathode like the actual watch). - hri_tcc_set_WAVE_reg(TCC0, (1 << (TCC_WAVE_POL0_Pos + WATCH_RED_TCC_CHANNEL)) | - (1 << (TCC_WAVE_POL0_Pos + WATCH_GREEN_TCC_CHANNEL))); - #endif - // The buzzer will set the period depending on the tone it wants to play, but we have to set some period here to - // get the LED working. Almost any period will do, tho it should be below 20000 (i.e. 50 Hz) to avoid flickering. - hri_tcc_write_PER_reg(TCC0, 4096); - // Set the duty cycle of all pins to 0: LED's off, buzzer not buzzing. - hri_tcc_write_CC_reg(TCC0, WATCH_BUZZER_TCC_CHANNEL, 0); - hri_tcc_write_CC_reg(TCC0, WATCH_RED_TCC_CHANNEL, 0); - hri_tcc_write_CC_reg(TCC0, WATCH_GREEN_TCC_CHANNEL, 0); - // Enable the TCC - hri_tcc_set_CTRLA_ENABLE_bit(TCC0); - hri_tcc_wait_for_sync(TCC0, TCC_SYNCBUSY_ENABLE); - - // enable LED PWM pins (the LED driver assumes if the TCC is on, the pins are enabled) - gpio_set_pin_direction(RED, GPIO_DIRECTION_OUT); - gpio_set_pin_function(RED, WATCH_RED_TCC_PINMUX); - gpio_set_pin_direction(GREEN, GPIO_DIRECTION_OUT); - gpio_set_pin_function(GREEN, WATCH_GREEN_TCC_PINMUX); -} - -void _watch_disable_tcc(void) { - // disable all PWM pins - gpio_set_pin_direction(BUZZER, GPIO_DIRECTION_OFF); - gpio_set_pin_function(BUZZER, GPIO_PIN_FUNCTION_OFF); - gpio_set_pin_direction(RED, GPIO_DIRECTION_OFF); - gpio_set_pin_function(RED, GPIO_PIN_FUNCTION_OFF); - gpio_set_pin_direction(GREEN, GPIO_DIRECTION_OFF); - gpio_set_pin_function(GREEN, GPIO_PIN_FUNCTION_OFF); - - // disable the TCC - hri_tcc_clear_CTRLA_ENABLE_bit(TCC0); - hri_mclk_clear_APBCMASK_TCC0_bit(MCLK); -} - -void _watch_enable_usb(void) { - // disable USB, just in case. - hri_usb_clear_CTRLA_ENABLE_bit(USB); - - // bump clock up to 8 MHz - hri_oscctrl_write_OSC16MCTRL_FSEL_bf(OSCCTRL, OSCCTRL_OSC16MCTRL_FSEL_8_Val); - - // reset flags and disable DFLL - OSCCTRL->INTFLAG.reg = OSCCTRL_INTFLAG_DFLLRDY; - OSCCTRL->DFLLCTRL.reg = 0; - while (!(OSCCTRL->STATUS.reg & OSCCTRL_STATUS_DFLLRDY)); - - // set the coarse and fine values to speed up frequency lock. - uint32_t coarse =(*((uint32_t *)NVMCTRL_OTP5)) >> 26; - OSCCTRL->DFLLVAL.reg = OSCCTRL_DFLLVAL_COARSE(coarse) | - OSCCTRL_DFLLVAL_FINE(0x200); - // set coarse and fine steps, and multiplier (48 MHz = 32768 Hz * 1465) - OSCCTRL->DFLLMUL.reg = OSCCTRL_DFLLMUL_CSTEP( 1 ) | - OSCCTRL_DFLLMUL_FSTEP( 1 ) | - OSCCTRL_DFLLMUL_MUL( 1465 ); - // set closed loop mode, chill cycle disable and USB clock recovery mode, and enable the DFLL. - OSCCTRL->DFLLCTRL.reg = OSCCTRL_DFLLCTRL_MODE | OSCCTRL_DFLLCTRL_CCDIS | OSCCTRL_DFLLCTRL_ONDEMAND | OSCCTRL_DFLLCTRL_RUNSTDBY | OSCCTRL_DFLLCTRL_USBCRM | OSCCTRL_DFLLCTRL_ENABLE; - while (!(OSCCTRL->STATUS.reg & OSCCTRL_STATUS_DFLLRDY)); - - // assign DFLL to GCLK1 - GCLK->GENCTRL[1].reg = GCLK_GENCTRL_SRC(GCLK_GENCTRL_SRC_DFLL48M) | GCLK_GENCTRL_DIV(1) | GCLK_GENCTRL_GENEN;// | GCLK_GENCTRL_OE; - while (GCLK->SYNCBUSY.bit.GENCTRL1); - - // assign GCLK1 to USB - hri_gclk_write_PCHCTRL_reg(GCLK, USB_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK1_Val | GCLK_PCHCTRL_CHEN); - hri_mclk_set_AHBMASK_USB_bit(MCLK); - hri_mclk_set_APBBMASK_USB_bit(MCLK); - - // USB Pin Init - gpio_set_pin_direction(PIN_PA24, GPIO_DIRECTION_OUT); - gpio_set_pin_level(PIN_PA24, false); - gpio_set_pin_pull_mode(PIN_PA24, GPIO_PULL_OFF); - gpio_set_pin_direction(PIN_PA25, GPIO_DIRECTION_OUT); - gpio_set_pin_level(PIN_PA25, false); - gpio_set_pin_pull_mode(PIN_PA25, GPIO_PULL_OFF); - - gpio_set_pin_function(PIN_PA24, PINMUX_PA24G_USB_DM); - gpio_set_pin_function(PIN_PA25, PINMUX_PA25G_USB_DP); - - // before we init TinyUSB, we are going to need a periodic callback to handle TinyUSB tasks. - // TC2 and TC3 are reserved for devices on the 9-pin connector, so let's use TC0. - // clock TC0 with the 8 MHz clock on GCLK0. - hri_gclk_write_PCHCTRL_reg(GCLK, TC0_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK0_Val | GCLK_PCHCTRL_CHEN); - // and enable the peripheral clock. - hri_mclk_set_APBCMASK_TC0_bit(MCLK); - // disable and reset TC0. - hri_tc_clear_CTRLA_ENABLE_bit(TC0); - hri_tc_wait_for_sync(TC0, TC_SYNCBUSY_ENABLE); - hri_tc_write_CTRLA_reg(TC0, TC_CTRLA_SWRST); - hri_tc_wait_for_sync(TC0, TC_SYNCBUSY_SWRST); - // configure the TC to overflow 1,000 times per second - hri_tc_write_CTRLA_reg(TC0, TC_CTRLA_PRESCALER_DIV64 | // divide the 8 MHz clock by 64 to count at 125 KHz - TC_CTRLA_MODE_COUNT8 | // count in 8-bit mode - TC_CTRLA_RUNSTDBY); // run in standby, just in case we figure that out - hri_tccount8_write_PER_reg(TC0, 125); // 125000 Hz / 125 = 1,000 Hz - // set an interrupt on overflow; this will call TC0_Handler below. - hri_tc_set_INTEN_OVF_bit(TC0); - NVIC_ClearPendingIRQ(TC0_IRQn); - NVIC_EnableIRQ (TC0_IRQn); - - // now we can init TinyUSB - tusb_init(); - // and start the timer that handles USB device tasks. - hri_tc_set_CTRLA_ENABLE_bit(TC0); -} - -// this function ends up getting called by printf to log stuff to the USB console. -int _write(int file, char *ptr, int len) { - (void)file; - if (hri_usbdevice_get_CTRLA_ENABLE_bit(USB)) { - tud_cdc_n_write(0, (void const*)ptr, len); - tud_cdc_n_write_flush(0); - return len; - } - - return 0; -} - -// this method could be overridden to read stuff from the USB console? but no need rn. -int _read(void) { - return 0; -} - -// Alternate function that outputs to the debug UART. useful for debugging USB issues. -// int _write(int file, char *ptr, int len) { -// (void)file; -// int pos = 0; -// while(pos < len) watch_debug_putc(ptr[pos++]); - -// return 0; -// } - -void USB_Handler(void) { - tud_int_handler(0); -} - -void TC0_Handler(void) { - tud_task(); - TC0->COUNT8.INTFLAG.reg |= TC_INTFLAG_OVF; -} - - -// USB Descriptors and tinyUSB callbacks follow. - -/* - * The MIT License (MIT) - * - * Copyright (c) 2019 Ha Thach (tinyusb.org) - * - * 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. - * - */ - -//--------------------------------------------------------------------+ -// Device Descriptors -//--------------------------------------------------------------------+ -tusb_desc_device_t const desc_device = -{ - .bLength = sizeof(tusb_desc_device_t), - .bDescriptorType = TUSB_DESC_DEVICE, - .bcdUSB = 0x0200, - - // Use Interface Association Descriptor (IAD) for CDC - // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1) - .bDeviceClass = TUSB_CLASS_MISC, - .bDeviceSubClass = MISC_SUBCLASS_COMMON, - .bDeviceProtocol = MISC_PROTOCOL_IAD, - - .bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE, - - .idVendor = 0x1209, - .idProduct = 0x2151, - .bcdDevice = 0x0100, - - .iManufacturer = 0x01, - .iProduct = 0x02, - .iSerialNumber = 0x03, - - .bNumConfigurations = 0x01 -}; - -// Invoked when received GET DEVICE DESCRIPTOR -// Application return pointer to descriptor -uint8_t const * tud_descriptor_device_cb(void) { - return (uint8_t const *) &desc_device; -} - -//--------------------------------------------------------------------+ -// Configuration Descriptor -//--------------------------------------------------------------------+ - -enum { - ITF_NUM_CDC = 0, - ITF_NUM_CDC_DATA, - ITF_NUM_TOTAL -}; - -#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN) - -#define EPNUM_CDC_NOTIF 0x81 -#define EPNUM_CDC_OUT 0x02 -#define EPNUM_CDC_IN 0x82 - - -uint8_t const desc_fs_configuration[] = { - // Config number, interface count, string index, total length, attribute, power in mA - TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100), - - // Interface number, string index, EP notification address and size, EP data address (out, in) and size. - TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64), -}; - -// Invoked when received GET CONFIGURATION DESCRIPTOR -// Application return pointer to descriptor -// Descriptor contents must exist long enough for transfer to complete -uint8_t const * tud_descriptor_configuration_cb(uint8_t index) { - (void) index; // for multiple configurations - return desc_fs_configuration; -} - -//--------------------------------------------------------------------+ -// String Descriptors -//--------------------------------------------------------------------+ - -// array of pointer to string descriptors -char const* string_desc_arr [] = -{ - (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409) - "TinyUSB", // 1: Manufacturer - "TinyUSB Device", // 2: Product - "123456", // 3: Serials, should use chip ID - "TinyUSB CDC", // 4: CDC Interface -}; - -static uint16_t _desc_str[32]; - -// Invoked when received GET STRING DESCRIPTOR request -// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete -uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid) -{ - (void) langid; - - uint8_t chr_count; - - if ( index == 0) { - memcpy(&_desc_str[1], string_desc_arr[0], 2); - chr_count = 1; - } else { - // Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors. - // https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors - - if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL; - - const char* str = string_desc_arr[index]; - - // Cap at max char - chr_count = strlen(str); - if ( chr_count > 31 ) chr_count = 31; - - // Convert ASCII string into UTF-16 - for(uint8_t i=0; i<chr_count; i++) - { - _desc_str[1+i] = str[i]; - } - } - - // first byte is length (including header), second byte is string type - _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2); - - return _desc_str; -} |