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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/hardware/hpl/trng | |
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/hardware/hpl/trng')
-rwxr-xr-x | watch-library/hardware/hpl/trng/hpl_trng.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/watch-library/hardware/hpl/trng/hpl_trng.c b/watch-library/hardware/hpl/trng/hpl_trng.c new file mode 100755 index 00000000..43ede044 --- /dev/null +++ b/watch-library/hardware/hpl/trng/hpl_trng.c @@ -0,0 +1,110 @@ +/** + * \file + * + * \brief True Random Number Generator + * + * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries. + * + * \asf_license_start + * + * \page License + * + * Subject to your compliance with these terms, you may use Microchip + * software and any derivatives exclusively with Microchip products. + * It is your responsibility to comply with third party license terms applicable + * to your use of third party software (including open source software) that + * may accompany Microchip software. + * + * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, + * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, + * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, + * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE + * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL + * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE + * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE + * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT + * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY + * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, + * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. + * + * \asf_license_stop + * + */ + +#include <err_codes.h> +#include <hpl_rand_sync.h> +#include <hpl_trng_config.h> +#include <utils_assert.h> + +static inline int32_t _trng_init(void *hw) +{ + if (hri_trng_get_CTRLA_reg(hw, TRNG_CTRLA_ENABLE)) { + return ERR_DENIED; + } + if (CONF_TRNG_RUNSTDBY) { + hri_trng_set_CTRLA_RUNSTDBY_bit(hw); + } else { + hri_trng_clear_CTRLA_RUNSTDBY_bit(hw); + } + if (CONF_TRNG_DATARDYEO) { + hri_trng_set_EVCTRL_DATARDYEO_bit(hw); + } else { + hri_trng_clear_EVCTRL_DATARDYEO_bit(hw); + } + return ERR_NONE; +} + +int32_t _rand_sync_init(struct _rand_sync_dev *const dev, void *const hw) +{ + int32_t rc; + + ASSERT(dev && hw); + + rc = _trng_init(hw); + if (rc == ERR_NONE) { + dev->prvt = hw; + dev->n_bits = 32; + } + return rc; +} + +void _rand_sync_deinit(struct _rand_sync_dev *const dev) +{ + _rand_sync_disable(dev); +} + +int32_t _rand_sync_enable(struct _rand_sync_dev *const dev) +{ + ASSERT(dev); + ASSERT(dev->prvt); + + hri_trng_set_CTRLA_ENABLE_bit(dev->prvt); + return ERR_NONE; +} + +void _rand_sync_disable(struct _rand_sync_dev *const dev) +{ + ASSERT(dev); + ASSERT(dev->prvt); + + hri_trng_clear_CTRLA_ENABLE_bit(dev->prvt); +} + +int32_t _rand_sync_set_seed(struct _rand_sync_dev *const dev, const uint32_t seed) +{ + (void)dev; + (void)seed; + return ERR_UNSUPPORTED_OP; +} + +uint32_t _rand_sync_read_one(const struct _rand_sync_dev *const dev) +{ + ASSERT(dev); + ASSERT(dev->prvt); + ASSERT(hri_trng_get_CTRLA_reg(dev->prvt, TRNG_CTRLA_ENABLE)); + + while (!hri_trng_get_INTFLAG_reg(dev->prvt, TRNG_INTFLAG_DATARDY)) { + /* Wait until data ready. */ + } + return hri_trng_read_DATA_reg(dev->prvt); +} |