Rohm BH1726 ALS sensor driver.
Dependents: rohm-bh1726-hello rohm-tileshield-6sensor-demo
Fork of rohm-bh1745 by
Diff: source/bh1745_driver.cpp
- Revision:
- 2:40307a303153
- Parent:
- 1:64629eee9eab
- Child:
- 3:6eb91c7c6560
--- a/source/bh1745_driver.cpp Mon Sep 12 12:31:40 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,108 +0,0 @@
-/* Copyright 2016 Rohm Semiconductor
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-#include "../../rohm-sensor-hal/rohm-sensor-hal/rohm_hal.h" //types, DEBUG_print*
-#include "../../rohm-sensor-hal/rohm-sensor-hal/I2CCommon.h" //read_register, write_register, change_bits
-
-#include "../rohm-bh1745/bh1745.h" //bh1745_* register definitions
-#include "../rohm-bh1745/bh1745_driver.h"
-//Choose SAD according to setup
-//#define SAD 0x38
-#define SAD 0x39
-
-/* bh1745 driver*/
-uint8_t bh1745_readId(){
- uint8_t id;
- uint8_t read_bytes;
-
- read_bytes = read_register(SAD, BH1745_ID_REG, &id, 1);
- if ( read_bytes > 0 ){
- uint8_t partid;
-
- DEBUG_printf("Manufacturer: %u\n\r", id);
- read_bytes = read_register(SAD, BH1745_SYSTEM_CONTROL, &partid, 1);
- if ( read_bytes > 0 ){
- DEBUG_printf("Part ID: %u\n\r", (partid & 0b00111111) );
- return(partid);
- }
- else{
- DEBUG_print("Part ID read failed.\n\r");
- return 255;
- }
- }
- else{
- DEBUG_print("Manufacturer read failed.\n\r");
- return 255;
- }
-}
-
-void bh1745_wait_until_found(){
- uint8_t id;
-
- id = bh1745_readId();
- while (id == 255){
- wait(100);
- id = bh1745_readId();
- }
- return;
- }
-
-void bh1745_soft_reset(){
- change_bits(SAD, BH1745_MODE_CONTROL1, BH1745_SYSTEM_CONTROL_SW_RESET_MASK, BH1745_SYSTEM_CONTROL_SW_RESET_START);
-}
-
-void bh1745_clear_interrupt(){
- uint8_t tmp;
- read_register(SAD, BH1745_INTERRUPT, &tmp, 1);
-}
-
-void bh1745_initial_setup(){
- write_register(SAD, BH1745_INTERRUPT,
- (BH1745_INTERRUPT_STATUS_INACTIVE |
- BH1745_INTERRUPT_LATCH_ENABLE |
- BH1745_INTERRUPT_PIN_DISABLE)
- );
- write_register(SAD, BH1745_PERSISTENCE,
- (BH1745_PERSISTENCE_OF_INTERRUPT_STATUS_TOGGLE_AFTER_MEASUREMENT)
- );
- write_register(SAD, BH1745_MODE_CONTROL1,
- (BH1745_MODE_CONTROL1_MEASUREMENT_TIME_160MSEC)
- );
- write_register(SAD, BH1745_MODE_CONTROL2,
- (BH1745_MODE_CONTROL2_RGBC_MEASUREMENT_ACTIVE |
- BH1745_MODE_CONTROL2_ADC_GAIN_1X)
- );
-}
-
-/* input param: data16, pointer to 4*16bit memory
- return: error, true/false */
-bool bh1745_read_data(uint16_t* data16){
- #define BH1745_DATA_LEN 8
- uint8_t data[BH1745_DATA_LEN];
- uint8_t read_bytes;
-
- read_bytes = read_register(SAD, BH1745_RED_DATA_LSBS, &data[0], BH1745_DATA_LEN);
- if (read_bytes == BH1745_DATA_LEN){
- data16[0] = (data[0]) | (data[1] << 8); //red
- data16[1] = (data[2]) | (data[3] << 8); //green
- data16[2] = (data[4]) | (data[5] << 8); //blue
- data16[3] = (data[6]) | (data[7] << 8); //clear
- return false;
- }
- else{
- DEBUG_printf("Read error. Read %d bytes\n\r", read_bytes);
- return true;
- }
-
- }

Rohm BH1726NUC | Ambient Light Sensor