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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/watch/watch_i2c.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/hardware/watch/watch_i2c.c')
-rw-r--r-- | watch-library/hardware/watch/watch_i2c.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/watch-library/hardware/watch/watch_i2c.c b/watch-library/hardware/watch/watch_i2c.c new file mode 100644 index 00000000..ff20afc6 --- /dev/null +++ b/watch-library/hardware/watch/watch_i2c.c @@ -0,0 +1,93 @@ +/* + * 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_i2c.h" + +struct io_descriptor *I2C_0_io; + +void watch_enable_i2c(void) { + I2C_0_init(); + i2c_m_sync_get_io_descriptor(&I2C_0, &I2C_0_io); + i2c_m_sync_enable(&I2C_0); +} + +void watch_disable_i2c(void) { + i2c_m_sync_disable(&I2C_0); + hri_mclk_clear_APBCMASK_SERCOM1_bit(MCLK); +} + +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; +} |