Driver for Proximity / Ambient Light Sensor VCNL40xx from Vishay
Fork of VCNL40x0 by
Diff: main.cpp
- Revision:
- 2:70621b4de13a
- Parent:
- 1:cf336a5443e3
--- a/main.cpp Fri Jul 04 21:31:19 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,352 +0,0 @@ -/* -Copyright (c) 2012 Vishay GmbH, www.vishay.com -author: DS, version 1.2 - -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. -*/ - -#define VERSION "\n Version: 1.2 01/2012\n" -#define MAIN1 // select MAIN1, MAIN2, MAIN3 or MIAN4 -#define BAUD 115200 // increase up to 921600 for high speed communication (depends on terminal programm and USB mode) - -#include "mbed.h" -#include "VCNL40x0.h" - -//VCNL40x0 VCNL40x0_Device (p28, p27, VCNL40x0_ADDRESS); // Define SDA, SCL pin and I2C address -VCNL40x0 VCNL40x0_Device (p9, p10, VCNL40x0_ADDRESS); // Define SDA, SCL pin and I2C address -DigitalOut mled0(LED1); // LED #1 -DigitalOut mled1(LED2); // LED #2 -DigitalOut mled2(LED3); // LED #3 -Serial pc(USBTX, USBRX); // Tx, Rx USB transmission - -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// main #1 -// Read Proximity on demand and Ambillight on demand in endless loop -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -# ifdef MAIN1 - -int main() { - unsigned char ID=0; - unsigned char Current=0; - unsigned int ProxiValue=0; - unsigned int AmbiValue=0; - - pc.baud(BAUD); // set USB speed (virtual COM port) - - // print information on screen - pc.printf("\n\n VCNL4010/4020 Proximity/Ambient Light Sensor"); - pc.printf("\n library tested with mbed LPC1768 (ARM Cortex-M3 core) on www.mbed.org"); - pc.printf(VERSION); - pc.printf("\n Demonstration #1:"); - pc.printf("\n Read Proximity on demand and Ambillight on demand in endless loop"); - - VCNL40x0_Device.ReadID (&ID); // Read VCNL40x0 product ID revision register - pc.printf("\n\n Product ID Revision Register: %d", ID); - - VCNL40x0_Device.SetCurrent (20); // Set current to 200mA - VCNL40x0_Device.ReadCurrent (&Current); // Read back IR LED current - pc.printf("\n IR LED Current: %d\n\n", Current); - - wait_ms(3000); // wait 3s (only for display) - -// endless loop ///////////////////////////////////////////////////////////////////////////////////// - - while (1) { - mled0 = 1; // LED on - VCNL40x0_Device.ReadProxiOnDemand (&ProxiValue); // read prox value on demand - VCNL40x0_Device.ReadAmbiOnDemand (&AmbiValue); // read ambi value on demand - mled0 = 0; // LED off - - // pront values on screen - pc.printf("\nProxi: %5.0i cts \tAmbi: %5.0i cts \tIlluminance: %7.2f lx", ProxiValue, AmbiValue, AmbiValue/4.0); - } -} -# endif - -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// main #2 -// Proximity Measurement in selfetimed mode with 4 measurements/s -// Read prox value if ready with conversion, endless loop -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -# ifdef MAIN2 - -int main() { - unsigned char ID=0; - unsigned char Command=0; - unsigned char Current=0; - unsigned int ProxiValue=0; - unsigned int AmbiValue=0; - - pc.baud(BAUD); - - // print information on screen - pc.printf("\n\n VCNL4010/4020 Proximity/Ambient Light Sensor"); - pc.printf("\n library tested with mbed LPC1768 (ARM Cortex-M3 core) on www.mbed.org"); - pc.printf(VERSION); - pc.printf("\n Demonstration #2:"); - pc.printf("\n Proximity Measurement in selftimed mode with 4 measurements/s"); - pc.printf("\n Read prox value if ready with conversion, endless loop"); - - VCNL40x0_Device.ReadID (&ID); // Read VCNL40x0 product ID revision register - pc.printf("\n\n Product ID Revision Register: %d", ID); - - VCNL40x0_Device.SetCurrent (20); // Set current to 200mA - VCNL40x0_Device.ReadCurrent (&Current); // Read back IR LED current - pc.printf("\n IR LED Current: %d\n\n", Current); - - VCNL40x0_Device.SetProximityRate (PROX_MEASUREMENT_RATE_4); // set proximity rate to 4/s - - // enable prox in selftimed mode - VCNL40x0_Device.SetCommandRegister (COMMAND_PROX_ENABLE | COMMAND_SELFTIMED_MODE_ENABLE); - - wait_ms(3000); // wait 3s (only for display) - -// endless loop ///////////////////////////////////////////////////////////////////////////////////// - - while (1) { - - // wait on prox data ready bit - do { - VCNL40x0_Device.ReadCommandRegister (&Command); // read command register - } while (!(Command & COMMAND_MASK_PROX_DATA_READY));// prox data ready ? - - mled0 = 1; // LED on - VCNL40x0_Device.ReadProxiValue (&ProxiValue); // read prox value - mled0 = 0; // LED off - - // print values on screen - pc.printf("\nProxi: %5.0i cts", ProxiValue); - } -} -# endif - -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// main #3 -// Proximity Measurement in selfetimed mode with 31 measurements/s -// Interrupt waiting on proximity value > upper threshold limit -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -# ifdef MAIN3 - -int main() { - unsigned char ID=0; - unsigned char Command=0; - unsigned char Current=0; - unsigned int ProxiValue=0; - unsigned int AmbiValue=0; - unsigned char InterruptStatus=0; - unsigned char InterruptControl=0; - - pc.baud(BAUD); - - // print information on screen - pc.printf("\n\n VCNL4010/4020 Proximity/Ambient Light Sensor"); - pc.printf("\n library tested with mbed LPC1768 (ARM Cortex-M3 core) on www.mbed.org"); - pc.printf(VERSION); - pc.printf("\n Demonstration #3:"); - pc.printf("\n Proximity Measurement in selfetimed mode with 31 measurements/s"); - pc.printf("\n Interrupt waiting on proximity value > upper threshold limit"); - - VCNL40x0_Device.ReadID (&ID); // Read VCNL40x0 product ID revision register - pc.printf("\n\n Product ID Revision Register: %d", ID); - - VCNL40x0_Device.SetCurrent (20); // Set current to 200mA - VCNL40x0_Device.ReadCurrent (&Current); // Read back IR LED current - pc.printf("\n IR LED Current: %d\n\n", Current); - - // stop all activities (necessary for changing proximity rate, see datasheet) - VCNL40x0_Device.SetCommandRegister (COMMAND_ALL_DISABLE); - - // set proximity rate to 31/s - VCNL40x0_Device.SetProximityRate (PROX_MEASUREMENT_RATE_31); - - // enable prox in selftimed mode - VCNL40x0_Device.SetCommandRegister (COMMAND_PROX_ENABLE | - COMMAND_SELFTIMED_MODE_ENABLE); - - // set interrupt control register - VCNL40x0_Device.SetInterruptControl (INTERRUPT_THRES_SEL_PROX | - INTERRUPT_THRES_ENABLE | - INTERRUPT_COUNT_EXCEED_1); - - VCNL40x0_Device.ReadInterruptControl (&InterruptControl); // Read back Interrupt Control register - pc.printf("\n Interrupt Control Register: %i\n\n", InterruptControl); - - - // wait on prox data ready bit - do { - VCNL40x0_Device.ReadCommandRegister (&Command); // read command register - } while (!(Command & COMMAND_MASK_PROX_DATA_READY)); // prox data ready ? - - VCNL40x0_Device.ReadProxiValue (&ProxiValue); // read prox value - VCNL40x0_Device.SetHighThreshold (ProxiValue+100); // set high threshold for interrupt - - wait_ms(3000); // wait 3s (only for display) - -// endless loop ///////////////////////////////////////////////////////////////////////////////////// - - while (1) { - - // wait on prox data ready bit - do { - VCNL40x0_Device.ReadCommandRegister (&Command); // read command register - } while (!(Command & COMMAND_MASK_PROX_DATA_READY));// prox data ready ? - - mled0 = 1; // LED on - VCNL40x0_Device.ReadProxiValue (&ProxiValue); // read prox value - mled0 = 0; // LED off - - // read interrupt status register - VCNL40x0_Device.ReadInterruptStatus (&InterruptStatus); - - // print prox value and interrupt status on screen - pc.printf("\nProxi: %5.0i cts \tInterruptStatus: %i", ProxiValue, InterruptStatus); - - // check interrupt status for High Threshold - if (InterruptStatus & INTERRUPT_MASK_STATUS_THRES_HI) { - mled1 = 1; // LED on - VCNL40x0_Device.SetInterruptStatus (InterruptStatus); // clear Interrupt Status - mled1 = 0; // LED on - } - } -} -# endif - -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// main #4 -// Proximity Measurement and Ambientlight Measurement in selftimed mode -// Proximity with 31 measurements/s, Ambientlight with 2 measurement/s -// Interrupt waiting on proximity value > upper threshold limit -///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -# ifdef MAIN4 - -int main() { - unsigned int i=0; - unsigned char ID=0; - unsigned char Command=0; - unsigned char Current=0; - unsigned int ProxiValue=0; - unsigned int SummeProxiValue=0; - unsigned int AverageProxiValue=0; - unsigned int AmbiValue=0; - unsigned char InterruptStatus=0; - unsigned char InterruptControl=0; - - pc.baud(BAUD); - - // print information on screen - pc.printf("\n\n VCNL4010/4020 Proximity/Ambient Light Sensor"); - pc.printf("\n library tested with mbed LPC1768 (ARM Cortex-M3 core) on www.mbed.org"); - pc.printf(VERSION); - pc.printf("\n Demonstration #4:"); - pc.printf("\n Proximity Measurement and Ambient light Measurement in selftimed mode"); - pc.printf("\n Proximity with 31 measurements/s, Ambient light with 2 measurement/s"); - pc.printf("\n Interrupt waiting on proximity value > upper threshold limit"); - - VCNL40x0_Device.ReadID (&ID); // Read VCNL40x0 product ID revision register - pc.printf("\n\n Product ID Revision Register: %d", ID); - - VCNL40x0_Device.SetCurrent (20); // Set current to 200mA - VCNL40x0_Device.ReadCurrent (&Current); // Read back IR LED current - pc.printf("\n IR LED Current: %d", Current); - - // stop all activities (necessary for changing proximity rate, see datasheet) - VCNL40x0_Device.SetCommandRegister (COMMAND_ALL_DISABLE); - - // set proximity rate to 31/s - VCNL40x0_Device.SetProximityRate (PROX_MEASUREMENT_RATE_31); - - // enable prox and ambi in selftimed mode - VCNL40x0_Device.SetCommandRegister (COMMAND_PROX_ENABLE | - COMMAND_AMBI_ENABLE | - COMMAND_SELFTIMED_MODE_ENABLE); - - // set interrupt control for threshold - VCNL40x0_Device.SetInterruptControl (INTERRUPT_THRES_SEL_PROX | - INTERRUPT_THRES_ENABLE | - INTERRUPT_COUNT_EXCEED_1); - - // set ambient light measurement parameter - VCNL40x0_Device.SetAmbiConfiguration (AMBI_PARA_AVERAGE_32 | - AMBI_PARA_AUTO_OFFSET_ENABLE | - AMBI_PARA_MEAS_RATE_2); - - // measure average of prox value - SummeProxiValue = 0; - - for (i=0; i<30; i++) { - do { // wait on prox data ready bit - VCNL40x0_Device.ReadCommandRegister (&Command); // read command register - } while (!(Command & COMMAND_MASK_PROX_DATA_READY)); // prox data ready ? - - VCNL40x0_Device.ReadProxiValue (&ProxiValue); // read prox value - - SummeProxiValue += ProxiValue; // Summary of all measured prox values - } - - AverageProxiValue = SummeProxiValue/30; // calculate average - - VCNL40x0_Device.SetHighThreshold (AverageProxiValue+100); // set upper threshold for interrupt - pc.printf("\n Upper Threshold Value: %i cts\n\n", AverageProxiValue+100); - - wait_ms(2000); // wait 2s (only for display) - -// endless loop ///////////////////////////////////////////////////////////////////////////////////// - - while (1) { - - // wait on data ready bit - do { - VCNL40x0_Device.ReadCommandRegister (&Command); // read command register - } while (!(Command & (COMMAND_MASK_PROX_DATA_READY | COMMAND_MASK_AMBI_DATA_READY))); // data ready ? - - // read interrupt status register - VCNL40x0_Device.ReadInterruptStatus (&InterruptStatus); - - // check interrupt status for High Threshold - if (InterruptStatus & INTERRUPT_MASK_STATUS_THRES_HI) { - mled2 = 1; // LED on, Interrupt - VCNL40x0_Device.SetInterruptStatus (InterruptStatus); // clear Interrupt Status - mled2 = 0; // LED off, Interrupt - } - - // prox value ready for using - if (Command & COMMAND_MASK_PROX_DATA_READY) { - mled0 = 1; // LED on, Prox Data Ready - VCNL40x0_Device.ReadProxiValue (&ProxiValue); // read prox value - - // print prox value and interrupt status on screen - pc.printf("\nProxi: %5.0i cts \tInterruptStatus: %i", ProxiValue, InterruptStatus); - - mled0 = 0; // LED off, Prox data Ready - } - - // ambi value ready for using - if (Command & COMMAND_MASK_AMBI_DATA_READY) { - mled1 = 1; // LED on, Ambi Data Ready - VCNL40x0_Device.ReadAmbiValue (&AmbiValue); // read ambi value - - // print ambi value and interrupt status on screen - pc.printf("\n Ambi: %i", AmbiValue); - - mled1 = 0; // LED off, Ambi Data Ready - } - } -} -# endif -