b8de35658f
* 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
111 lines
2.8 KiB
C
Executable File
111 lines
2.8 KiB
C
Executable File
/**
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* \file
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*
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* \brief True Random Number Generator
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*
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* Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Subject to your compliance with these terms, you may use Microchip
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* software and any derivatives exclusively with Microchip products.
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* It is your responsibility to comply with third party license terms applicable
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* to your use of third party software (including open source software) that
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* may accompany Microchip software.
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*
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* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
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* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
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* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
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* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
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* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
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* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
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* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
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* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
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* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
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*
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* \asf_license_stop
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*
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*/
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#include <err_codes.h>
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#include <hpl_rand_sync.h>
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#include <hpl_trng_config.h>
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#include <utils_assert.h>
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static inline int32_t _trng_init(void *hw)
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{
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if (hri_trng_get_CTRLA_reg(hw, TRNG_CTRLA_ENABLE)) {
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return ERR_DENIED;
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}
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if (CONF_TRNG_RUNSTDBY) {
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hri_trng_set_CTRLA_RUNSTDBY_bit(hw);
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} else {
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hri_trng_clear_CTRLA_RUNSTDBY_bit(hw);
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}
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if (CONF_TRNG_DATARDYEO) {
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hri_trng_set_EVCTRL_DATARDYEO_bit(hw);
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} else {
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hri_trng_clear_EVCTRL_DATARDYEO_bit(hw);
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}
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return ERR_NONE;
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}
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int32_t _rand_sync_init(struct _rand_sync_dev *const dev, void *const hw)
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{
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int32_t rc;
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ASSERT(dev && hw);
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rc = _trng_init(hw);
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if (rc == ERR_NONE) {
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dev->prvt = hw;
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dev->n_bits = 32;
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}
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return rc;
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}
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void _rand_sync_deinit(struct _rand_sync_dev *const dev)
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{
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_rand_sync_disable(dev);
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}
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int32_t _rand_sync_enable(struct _rand_sync_dev *const dev)
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{
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ASSERT(dev);
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ASSERT(dev->prvt);
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hri_trng_set_CTRLA_ENABLE_bit(dev->prvt);
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return ERR_NONE;
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}
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void _rand_sync_disable(struct _rand_sync_dev *const dev)
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{
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ASSERT(dev);
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ASSERT(dev->prvt);
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hri_trng_clear_CTRLA_ENABLE_bit(dev->prvt);
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}
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int32_t _rand_sync_set_seed(struct _rand_sync_dev *const dev, const uint32_t seed)
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{
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(void)dev;
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(void)seed;
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return ERR_UNSUPPORTED_OP;
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}
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uint32_t _rand_sync_read_one(const struct _rand_sync_dev *const dev)
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{
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ASSERT(dev);
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ASSERT(dev->prvt);
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ASSERT(hri_trng_get_CTRLA_reg(dev->prvt, TRNG_CTRLA_ENABLE));
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while (!hri_trng_get_INTFLAG_reg(dev->prvt, TRNG_INTFLAG_DATARDY)) {
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/* Wait until data ready. */
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}
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return hri_trng_read_DATA_reg(dev->prvt);
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}
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