Rohm BH1749NUC color sensor library
Dependents: rohm-SensorShield-example
BH1749NUC.cpp@0:fe0f43b69595, 2019-02-27 (annotated)
- Committer:
- MACRUM
- Date:
- Wed Feb 27 06:48:28 2019 +0000
- Revision:
- 0:fe0f43b69595
Initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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MACRUM | 0:fe0f43b69595 | 1 | /***************************************************************************** |
MACRUM | 0:fe0f43b69595 | 2 | BH1749NUC.cpp |
MACRUM | 0:fe0f43b69595 | 3 | |
MACRUM | 0:fe0f43b69595 | 4 | Copyright (c) 2018-2019 ROHM Co.,Ltd. |
MACRUM | 0:fe0f43b69595 | 5 | |
MACRUM | 0:fe0f43b69595 | 6 | Permission is hereby granted, free of charge, to any person obtaining a copy |
MACRUM | 0:fe0f43b69595 | 7 | of this software and associated documentation files (the "Software"), to deal |
MACRUM | 0:fe0f43b69595 | 8 | in the Software without restriction, including without limitation the rights |
MACRUM | 0:fe0f43b69595 | 9 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
MACRUM | 0:fe0f43b69595 | 10 | copies of the Software, and to permit persons to whom the Software is |
MACRUM | 0:fe0f43b69595 | 11 | furnished to do so, subject to the following conditions: |
MACRUM | 0:fe0f43b69595 | 12 | |
MACRUM | 0:fe0f43b69595 | 13 | The above copyright notice and this permission notice shall be included in |
MACRUM | 0:fe0f43b69595 | 14 | all copies or substantial portions of the Software. |
MACRUM | 0:fe0f43b69595 | 15 | |
MACRUM | 0:fe0f43b69595 | 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
MACRUM | 0:fe0f43b69595 | 17 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
MACRUM | 0:fe0f43b69595 | 18 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
MACRUM | 0:fe0f43b69595 | 19 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
MACRUM | 0:fe0f43b69595 | 20 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
MACRUM | 0:fe0f43b69595 | 21 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
MACRUM | 0:fe0f43b69595 | 22 | THE SOFTWARE. |
MACRUM | 0:fe0f43b69595 | 23 | ******************************************************************************/ |
MACRUM | 0:fe0f43b69595 | 24 | #include "mbed.h" |
MACRUM | 0:fe0f43b69595 | 25 | #include "BH1749NUC.h" |
MACRUM | 0:fe0f43b69595 | 26 | |
MACRUM | 0:fe0f43b69595 | 27 | BH1749NUC::BH1749NUC(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr) |
MACRUM | 0:fe0f43b69595 | 28 | { |
MACRUM | 0:fe0f43b69595 | 29 | } |
MACRUM | 0:fe0f43b69595 | 30 | |
MACRUM | 0:fe0f43b69595 | 31 | BH1749NUC::~BH1749NUC() |
MACRUM | 0:fe0f43b69595 | 32 | { |
MACRUM | 0:fe0f43b69595 | 33 | m_addr = 0; |
MACRUM | 0:fe0f43b69595 | 34 | } |
MACRUM | 0:fe0f43b69595 | 35 | |
MACRUM | 0:fe0f43b69595 | 36 | int BH1749NUC::init(void) |
MACRUM | 0:fe0f43b69595 | 37 | { |
MACRUM | 0:fe0f43b69595 | 38 | int rc; |
MACRUM | 0:fe0f43b69595 | 39 | char reg; |
MACRUM | 0:fe0f43b69595 | 40 | |
MACRUM | 0:fe0f43b69595 | 41 | rc = read(BH1749NUC_SYSTEM_CONTROL, ®, sizeof(reg)); |
MACRUM | 0:fe0f43b69595 | 42 | if (rc != 0) { |
MACRUM | 0:fe0f43b69595 | 43 | DEBUG_PRINT("Can't access BH1749NUC\n"); |
MACRUM | 0:fe0f43b69595 | 44 | return (rc); |
MACRUM | 0:fe0f43b69595 | 45 | } |
MACRUM | 0:fe0f43b69595 | 46 | reg = reg & 0x3F; |
MACRUM | 0:fe0f43b69595 | 47 | DEBUG_PRINT("BH1749NUC Part ID Value = %02x\n", reg); |
MACRUM | 0:fe0f43b69595 | 48 | |
MACRUM | 0:fe0f43b69595 | 49 | if (reg != BH1749NUC_PART_ID_VAL) { |
MACRUM | 0:fe0f43b69595 | 50 | DEBUG_PRINT("Can't find BH1749NUC\n"); |
MACRUM | 0:fe0f43b69595 | 51 | return (rc); |
MACRUM | 0:fe0f43b69595 | 52 | } |
MACRUM | 0:fe0f43b69595 | 53 | |
MACRUM | 0:fe0f43b69595 | 54 | rc = read(BH1749NUC_MANUFACTURER_ID, ®, sizeof(reg)); |
MACRUM | 0:fe0f43b69595 | 55 | if (rc != 0) { |
MACRUM | 0:fe0f43b69595 | 56 | DEBUG_PRINT("Can't access BH1749NUC\n"); |
MACRUM | 0:fe0f43b69595 | 57 | return (rc); |
MACRUM | 0:fe0f43b69595 | 58 | } |
MACRUM | 0:fe0f43b69595 | 59 | DEBUG_PRINT("BH1749NUC MANUFACTURER ID Register Value = %02x\n", reg); |
MACRUM | 0:fe0f43b69595 | 60 | |
MACRUM | 0:fe0f43b69595 | 61 | if (reg != BH1749NUC_MANUFACT_ID_VAL) { |
MACRUM | 0:fe0f43b69595 | 62 | DEBUG_PRINT("Can't find BH1749NUC\n"); |
MACRUM | 0:fe0f43b69595 | 63 | return (rc); |
MACRUM | 0:fe0f43b69595 | 64 | } |
MACRUM | 0:fe0f43b69595 | 65 | |
MACRUM | 0:fe0f43b69595 | 66 | reg = BH1749NUC_MODE_CONTROL1_VAL; |
MACRUM | 0:fe0f43b69595 | 67 | rc = write(BH1749NUC_MODE_CONTROL1, ®, sizeof(reg)); |
MACRUM | 0:fe0f43b69595 | 68 | if (rc != 0) { |
MACRUM | 0:fe0f43b69595 | 69 | DEBUG_PRINT("Can't write BH1749NUC MODE_CONTROL1 register\n"); |
MACRUM | 0:fe0f43b69595 | 70 | return (rc); |
MACRUM | 0:fe0f43b69595 | 71 | } |
MACRUM | 0:fe0f43b69595 | 72 | |
MACRUM | 0:fe0f43b69595 | 73 | reg = BH1749NUC_MODE_CONTROL2_VAL; |
MACRUM | 0:fe0f43b69595 | 74 | rc = write(BH1749NUC_MODE_CONTROL2, ®, sizeof(reg)); |
MACRUM | 0:fe0f43b69595 | 75 | if (rc != 0) { |
MACRUM | 0:fe0f43b69595 | 76 | DEBUG_PRINT("Can't write BH1749NUC MODE_CONTROL2 register\n"); |
MACRUM | 0:fe0f43b69595 | 77 | return (rc); |
MACRUM | 0:fe0f43b69595 | 78 | } |
MACRUM | 0:fe0f43b69595 | 79 | |
MACRUM | 0:fe0f43b69595 | 80 | wait_ms(WAIT_TMT2_MAX); |
MACRUM | 0:fe0f43b69595 | 81 | return (rc); |
MACRUM | 0:fe0f43b69595 | 82 | } |
MACRUM | 0:fe0f43b69595 | 83 | |
MACRUM | 0:fe0f43b69595 | 84 | int BH1749NUC::get_rawval(char *data) |
MACRUM | 0:fe0f43b69595 | 85 | { |
MACRUM | 0:fe0f43b69595 | 86 | int rc; |
MACRUM | 0:fe0f43b69595 | 87 | |
MACRUM | 0:fe0f43b69595 | 88 | rc = read(BH1749NUC_RED_DATA_LSB, data, GET_BYTE_RED_TO_GREEN2); |
MACRUM | 0:fe0f43b69595 | 89 | if (rc != 0) { |
MACRUM | 0:fe0f43b69595 | 90 | DEBUG_PRINT("Can't get BH1749NUC RGB, IR and GREEN2 value\n"); |
MACRUM | 0:fe0f43b69595 | 91 | } |
MACRUM | 0:fe0f43b69595 | 92 | |
MACRUM | 0:fe0f43b69595 | 93 | return (rc); |
MACRUM | 0:fe0f43b69595 | 94 | } |
MACRUM | 0:fe0f43b69595 | 95 | |
MACRUM | 0:fe0f43b69595 | 96 | int BH1749NUC::get_val(unsigned short *data) |
MACRUM | 0:fe0f43b69595 | 97 | { |
MACRUM | 0:fe0f43b69595 | 98 | int rc; |
MACRUM | 0:fe0f43b69595 | 99 | char val[GET_BYTE_RED_TO_GREEN2]; |
MACRUM | 0:fe0f43b69595 | 100 | |
MACRUM | 0:fe0f43b69595 | 101 | rc = get_rawval(val); |
MACRUM | 0:fe0f43b69595 | 102 | if (rc != 0) { |
MACRUM | 0:fe0f43b69595 | 103 | return (rc); |
MACRUM | 0:fe0f43b69595 | 104 | } |
MACRUM | 0:fe0f43b69595 | 105 | |
MACRUM | 0:fe0f43b69595 | 106 | //val[6] and val[7] are RESERVED Register Value |
MACRUM | 0:fe0f43b69595 | 107 | data[0] = ((unsigned short)val[1] << 8) | val[0]; |
MACRUM | 0:fe0f43b69595 | 108 | data[1] = ((unsigned short)val[3] << 8) | val[2]; |
MACRUM | 0:fe0f43b69595 | 109 | data[2] = ((unsigned short)val[5] << 8) | val[4]; |
MACRUM | 0:fe0f43b69595 | 110 | data[3] = ((unsigned short)val[9] << 8) | val[8]; |
MACRUM | 0:fe0f43b69595 | 111 | data[4] = ((unsigned short)val[11] << 8) | val[10]; |
MACRUM | 0:fe0f43b69595 | 112 | |
MACRUM | 0:fe0f43b69595 | 113 | return (rc); |
MACRUM | 0:fe0f43b69595 | 114 | } |
MACRUM | 0:fe0f43b69595 | 115 | |
MACRUM | 0:fe0f43b69595 | 116 | int BH1749NUC::write(char memory_address, char *data, int size) |
MACRUM | 0:fe0f43b69595 | 117 | { |
MACRUM | 0:fe0f43b69595 | 118 | int rc = 0; |
MACRUM | 0:fe0f43b69595 | 119 | |
MACRUM | 0:fe0f43b69595 | 120 | char t = memory_address; |
MACRUM | 0:fe0f43b69595 | 121 | m_i2c.write(m_addr, &t, 1, true); |
MACRUM | 0:fe0f43b69595 | 122 | rc = m_i2c.write(m_addr, data, size); |
MACRUM | 0:fe0f43b69595 | 123 | return (rc); |
MACRUM | 0:fe0f43b69595 | 124 | } |
MACRUM | 0:fe0f43b69595 | 125 | |
MACRUM | 0:fe0f43b69595 | 126 | int BH1749NUC::read(char memory_address, char *data, int size) |
MACRUM | 0:fe0f43b69595 | 127 | { |
MACRUM | 0:fe0f43b69595 | 128 | char t = memory_address; |
MACRUM | 0:fe0f43b69595 | 129 | m_i2c.write(m_addr, &t, 1, true); |
MACRUM | 0:fe0f43b69595 | 130 | return m_i2c.read(m_addr, data, size); |
MACRUM | 0:fe0f43b69595 | 131 | } |