Optical pulse wave sensor BH1790GLC driver. The original code contributed by Hideki Tanaka.
Dependents: rohm-bh1790glc-hello rohm-SensorShield-example ECE568_Project2_Final
Fork of BH1790GLC by
bh1790glc.cpp@2:4446bf1de21b, 2017-06-19 (annotated)
- Committer:
- MikkoZ
- Date:
- Mon Jun 19 20:13:11 2017 +0000
- Revision:
- 2:4446bf1de21b
- Parent:
- 1:32bb2624bed8
Cleaned register definitions.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MikkoZ | 1:32bb2624bed8 | 1 | /* |
MikkoZ | 1:32bb2624bed8 | 2 | The MIT License (MIT) |
MikkoZ | 1:32bb2624bed8 | 3 | Copyright (c) 2017 Rohm Semiconductor |
MikkoZ | 1:32bb2624bed8 | 4 | |
MikkoZ | 1:32bb2624bed8 | 5 | Permission is hereby granted, free of charge, to any person obtaining a |
MikkoZ | 1:32bb2624bed8 | 6 | copy of this software and associated documentation files (the |
MikkoZ | 1:32bb2624bed8 | 7 | "Software"), to deal in the Software without restriction, including |
MikkoZ | 1:32bb2624bed8 | 8 | without limitation the rights to use, copy, modify, merge, publish, |
MikkoZ | 1:32bb2624bed8 | 9 | distribute, sublicense, and/or sell copies of the Software, and to |
MikkoZ | 1:32bb2624bed8 | 10 | permit persons to whom the Software is furnished to do so, subject to |
MikkoZ | 1:32bb2624bed8 | 11 | the following conditions: |
MikkoZ | 1:32bb2624bed8 | 12 | |
MikkoZ | 1:32bb2624bed8 | 13 | The above copyright notice and this permission notice shall be included |
MikkoZ | 1:32bb2624bed8 | 14 | in all copies or substantial portions of the Software. |
MikkoZ | 1:32bb2624bed8 | 15 | |
MikkoZ | 1:32bb2624bed8 | 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
MikkoZ | 1:32bb2624bed8 | 17 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
MikkoZ | 1:32bb2624bed8 | 18 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
MikkoZ | 1:32bb2624bed8 | 19 | IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
MikkoZ | 1:32bb2624bed8 | 20 | CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
MikkoZ | 1:32bb2624bed8 | 21 | TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
MikkoZ | 1:32bb2624bed8 | 22 | SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
MikkoZ | 1:32bb2624bed8 | 23 | */ |
MikkoZ | 1:32bb2624bed8 | 24 | |
MikkoZ | 1:32bb2624bed8 | 25 | |
MikkoZ | 1:32bb2624bed8 | 26 | #include "RegisterWriter/RegisterWriter/rohm_hal2.h" |
MikkoZ | 1:32bb2624bed8 | 27 | #include "RegisterWriter/RegisterWriter/RegisterWriter.h" |
MikkoZ | 1:32bb2624bed8 | 28 | |
MikkoZ | 1:32bb2624bed8 | 29 | #include "rohm-bh1790glc-driver/bh1790glc_registers.h" |
MikkoZ | 1:32bb2624bed8 | 30 | #include "rohm-bh1790glc-driver/bh1790glc.h" |
MikkoZ | 1:32bb2624bed8 | 31 | |
MikkoZ | 1:32bb2624bed8 | 32 | BH1790GLC::BH1790GLC(RegisterWriter &i2c_obj, uint8_t sad, uint8_t wai) : i2c_rw(i2c_obj) { |
MikkoZ | 1:32bb2624bed8 | 33 | /* Note that bh1790glc writes need to be single write command, not two separate. */ |
MikkoZ | 1:32bb2624bed8 | 34 | _sad = sad; |
MikkoZ | 1:32bb2624bed8 | 35 | _wai = wai; |
MikkoZ | 1:32bb2624bed8 | 36 | } |
MikkoZ | 1:32bb2624bed8 | 37 | |
MikkoZ | 1:32bb2624bed8 | 38 | BH1790GLC::~BH1790GLC() |
MikkoZ | 1:32bb2624bed8 | 39 | { |
MikkoZ | 1:32bb2624bed8 | 40 | } |
MikkoZ | 1:32bb2624bed8 | 41 | |
MikkoZ | 1:32bb2624bed8 | 42 | /* Check if sensor is found and setup default configuration for default measurements |
MikkoZ | 1:32bb2624bed8 | 43 | * |
MikkoZ | 1:32bb2624bed8 | 44 | * @return error true/false |
MikkoZ | 1:32bb2624bed8 | 45 | */ |
MikkoZ | 1:32bb2624bed8 | 46 | int BH1790GLC::set_default_on(void) |
MikkoZ | 1:32bb2624bed8 | 47 | { |
MikkoZ | 1:32bb2624bed8 | 48 | int error; |
MikkoZ | 1:32bb2624bed8 | 49 | uint8_t id; |
MikkoZ | 1:32bb2624bed8 | 50 | uint8_t part_id; |
MikkoZ | 1:32bb2624bed8 | 51 | uint8_t setup[3]; |
MikkoZ | 1:32bb2624bed8 | 52 | |
MikkoZ | 1:32bb2624bed8 | 53 | error = i2c_rw.read_register(_sad, BH1790GLC_PART_ID, &part_id, 1); |
MikkoZ | 1:32bb2624bed8 | 54 | error = error || i2c_rw.read_register(_sad, BH1790GLC_MANUFACTURER_ID, &id, 1); |
MikkoZ | 1:32bb2624bed8 | 55 | if (error) { |
MikkoZ | 1:32bb2624bed8 | 56 | DEBUG_printf("read error.\r\n"); |
MikkoZ | 1:32bb2624bed8 | 57 | return (error); |
MikkoZ | 1:32bb2624bed8 | 58 | } |
MikkoZ | 1:32bb2624bed8 | 59 | |
MikkoZ | 1:32bb2624bed8 | 60 | if (part_id != BH1790GLC_PART_ID_WIA_ID) { |
MikkoZ | 1:32bb2624bed8 | 61 | DEBUG_printf("PartID [%02X] doesn't match BH1790GLC.\r\n", part_id); |
MikkoZ | 1:32bb2624bed8 | 62 | } else { |
MikkoZ | 1:32bb2624bed8 | 63 | DEBUG_printf("PartID [%02X] OK.\r\n", part_id); |
MikkoZ | 1:32bb2624bed8 | 64 | } |
MikkoZ | 1:32bb2624bed8 | 65 | |
MikkoZ | 1:32bb2624bed8 | 66 | if (id != BH1790GLC_MID_VAL) { |
MikkoZ | 1:32bb2624bed8 | 67 | DEBUG_printf("Manufacturer id [%02X] doesn't match!\r\n", id); |
MikkoZ | 1:32bb2624bed8 | 68 | } else { |
MikkoZ | 1:32bb2624bed8 | 69 | DEBUG_printf("Manufacturer id [%02X] OK.\r\n", id); |
MikkoZ | 1:32bb2624bed8 | 70 | } |
MikkoZ | 1:32bb2624bed8 | 71 | |
MikkoZ | 1:32bb2624bed8 | 72 | setup[0] = (BH1790GLC_MEAS_CONTROL1_RDY_ENABLE | BH1790GLC_MEAS_CONTROL1_LED_LIGHTING_FREQ_128HZ | BH1790GLC_MEAS_CONTROL1_RCYCLE_32HZ); |
MikkoZ | 1:32bb2624bed8 | 73 | setup[1] = (BH1790GLC_MEAS_CONTROL2_LED1_EN_PULSED | BH1790GLC_MEAS_CONTROL2_LED_ON_TIME_216T_OSC | BH1790GLC_MEAS_CONTROL2_LED_CURRENT_10MA); |
MikkoZ | 1:32bb2624bed8 | 74 | setup[2] = BH1790GLC_MEAS_START_MEAS_ST_START; |
MikkoZ | 1:32bb2624bed8 | 75 | error = i2c_rw.write_register(_sad, BH1790GLC_MEAS_CONTROL1, setup, (uint8_t)sizeof(setup)); |
MikkoZ | 1:32bb2624bed8 | 76 | if (error) { |
MikkoZ | 1:32bb2624bed8 | 77 | DEBUG_printf("BH1790GLC_MEAS_CONTROL1 write failed.\r\n"); |
MikkoZ | 1:32bb2624bed8 | 78 | } |
MikkoZ | 1:32bb2624bed8 | 79 | |
MikkoZ | 1:32bb2624bed8 | 80 | return (error); |
MikkoZ | 1:32bb2624bed8 | 81 | } |
MikkoZ | 1:32bb2624bed8 | 82 | /* |
MikkoZ | 1:32bb2624bed8 | 83 | * @return error true/false |
MikkoZ | 1:32bb2624bed8 | 84 | */ |
MikkoZ | 1:32bb2624bed8 | 85 | int BH1790GLC::getresults_raw(uint8_t *data) |
MikkoZ | 1:32bb2624bed8 | 86 | { |
MikkoZ | 1:32bb2624bed8 | 87 | return i2c_rw.read_register(_sad, BH1790GLC_DATAOUT_LEDOFF_L, data, 4); |
MikkoZ | 1:32bb2624bed8 | 88 | } |
MikkoZ | 1:32bb2624bed8 | 89 | |
MikkoZ | 1:32bb2624bed8 | 90 | /* |
MikkoZ | 1:32bb2624bed8 | 91 | * @return error true/false |
MikkoZ | 1:32bb2624bed8 | 92 | */ |
MikkoZ | 1:32bb2624bed8 | 93 | int BH1790GLC::getresults(uint16_t *data) |
MikkoZ | 1:32bb2624bed8 | 94 | { |
MikkoZ | 1:32bb2624bed8 | 95 | int error; |
MikkoZ | 1:32bb2624bed8 | 96 | uint8_t val[4]; |
MikkoZ | 1:32bb2624bed8 | 97 | |
MikkoZ | 1:32bb2624bed8 | 98 | error = getresults_raw(val); |
MikkoZ | 1:32bb2624bed8 | 99 | if (error) { |
MikkoZ | 1:32bb2624bed8 | 100 | return error; |
MikkoZ | 1:32bb2624bed8 | 101 | } |
MikkoZ | 1:32bb2624bed8 | 102 | data[0] = ((unsigned short)val[1] << 8) | (val[0]); |
MikkoZ | 1:32bb2624bed8 | 103 | data[1] = ((unsigned short)val[3] << 8) | (val[2]); |
MikkoZ | 1:32bb2624bed8 | 104 | |
MikkoZ | 1:32bb2624bed8 | 105 | return false; |
MikkoZ | 1:32bb2624bed8 | 106 | } |
MikkoZ | 1:32bb2624bed8 | 107 | |
MikkoZ | 1:32bb2624bed8 | 108 | //int BH1790GLC::write(char memory_address, char *data, int size) |
MikkoZ | 1:32bb2624bed8 | 109 | //{ |
MikkoZ | 1:32bb2624bed8 | 110 | // int rc; |
MikkoZ | 1:32bb2624bed8 | 111 | // rc = i2c_rw.write_register(_sad, memory_address, data, size ); |
MikkoZ | 1:32bb2624bed8 | 112 | // return !rc; |
MikkoZ | 1:32bb2624bed8 | 113 | //} |
MikkoZ | 1:32bb2624bed8 | 114 | // |
MikkoZ | 1:32bb2624bed8 | 115 | //int BH1790GLC::read(uint8_t memory_address, uint8_t *data, uint8_t size) |
MikkoZ | 1:32bb2624bed8 | 116 | //{ |
MikkoZ | 1:32bb2624bed8 | 117 | // int rc; |
MikkoZ | 1:32bb2624bed8 | 118 | // rc = i2c_rw.read_register(_sad, memory_address, data, size); |
MikkoZ | 1:32bb2624bed8 | 119 | // |
MikkoZ | 1:32bb2624bed8 | 120 | // return !rc; |
MikkoZ | 1:32bb2624bed8 | 121 | //} |