PixArt / Mbed 2 deprecated PAT9125_OTS_L476RG_Program

Initial Release of Program for PAT9125 OTS on L476RG Platform

Dependencies:   mbed

Fork of PAT9125_OTS_L476RG by PixArt

This section highlights the setup and operating guide to integrating PAT9125EL with the Nucleo L476RG.

Setup

Hardware:

  • 1. PC with Windows Operating System
  • 2. Nucleo L476RG Dev Kit Board from ST
  • 3. PAT9125EL Arduino Enabled Board
  • 4. USB Cable (one end with miniUSB)

Connection:

Please connect the board as show below.

/media/uploads/pixus_mbed/connection_with_labeling.jpg

Supplying Power

Connect the one end of the USB to the PC USB and the other to the Nucleo L476RG miniUSB as shown in the figure below.

/media/uploads/pixus_mbed/connection_with_power_led_red.jpg

I am assuming that you already know and are able to download the code at this point. Once programmed with the latest compiled .bin file, the LED should turn Green, as illustrated below.

/media/uploads/pixus_mbed/connection_with_power_led_green.jpg

Next, we will test to see if the sensor (PAT9125EL) is indeed functional, and able to display the rotational displacement, on the on-board LCD Display.

While you rotate the Rotational Shaft clockwise, you should see an increment in the digital count for "SHAFT" on the LCD Display, also showing "Up" as you rotate the shaft in the clockwise direction.

While you rotate the Rotational Shaft counter-clockwise, you should see decrease in the digital counts under "SHAFT"on the LCD Display, also showing "Down" as you rotate the shaft in the counter-clockwise direction.

While you push the shaft inward, you should see an increment in digital counts under SPRING. While pushed inward, it will show as "Pre" for Press on the LCD Display.

Conversely, once you release the shaft, the LCD Display should show "Rel" for "Release".

To RESET the digital count, press on the button on the bottom left side of the board. This should reset the digital count on "SHAFT" and "SPRING" to "+0000".

Have fun with this and should you have any questions, please do not hesitate to contact us.

main.cpp@22:5496743b160b, 2018-02-21 (annotated)

Committer:
pixus_mbed
Date:
Wed Feb 21 02:03:40 2018 +0000
Revision:
22:5496743b160b
Parent:
18:27c8c623f5d4 
Publish Test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pixus_mbed 0:411244c71423 1 /* mbed Microcontroller Library
pixus_mbed 0:411244c71423 2 * Copyright (c) 2006-2013 ARM Limited
pixus_mbed 0:411244c71423 3 *
pixus_mbed 0:411244c71423 4 * Licensed under the Apache License, Version 2.0 (the "License");
pixus_mbed 0:411244c71423 5 * you may not use this file except in compliance with the License.
pixus_mbed 0:411244c71423 6 * You may obtain a copy of the License at
pixus_mbed 0:411244c71423 7 *
pixus_mbed 0:411244c71423 8 * http://www.apache.org/licenses/LICENSE-2.0
pixus_mbed 0:411244c71423 9 *
pixus_mbed 0:411244c71423 10 * Unless required by applicable law or agreed to in writing, software
pixus_mbed 0:411244c71423 11 * distributed under the License is distributed on an "AS IS" BASIS,
pixus_mbed 0:411244c71423 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
pixus_mbed 0:411244c71423 13 * See the License for the specific language governing permissions and
pixus_mbed 0:411244c71423 14 * limitations under the License.
pixus_mbed 0:411244c71423 15 */
pixus_mbed 0:411244c71423 16
pixus_mbed 0:411244c71423 17 #include "mbed.h"
pixus_mbed 0:411244c71423 18 #include "pixart_lcm.h"
pixus_mbed 0:411244c71423 19 #include "pat9125_i2c.h"
pixus_mbed 0:411244c71423 20 #include "pat9125_mbed.h"
pixus_mbed 0:411244c71423 21
pixus_mbed 0:411244c71423 22 pat9125_mbed_state_s g_pat9125_mbed_state ;
pixus_mbed 0:411244c71423 23 pat9125_mbed *gp_pat9125_mbed ;
pixus_mbed 15:089f1d28d152 24 pixart_lcm *gp_pixart_lcm = NULL;
pixus_mbed 0:411244c71423 25
pixus_mbed 15:089f1d28d152 26 SPI spi(SPI_MOSI, SPI_MISO, SPI_SCK);
pixus_mbed 15:089f1d28d152 27 Serial pc(USBTX, USBRX);
pixus_mbed 0:411244c71423 28
pixus_mbed 9:53b4b362cbb8 29 #define I2C_SDA_PIN I2C_SDA
pixus_mbed 9:53b4b362cbb8 30 #define I2C_SCL_PIN I2C_SCL
pixus_mbed 15:089f1d28d152 31 //DigitalIn sdaDummy(I2C_SDA_PIN, PullUp);
pixus_mbed 15:089f1d28d152 32 //DigitalIn sclDummy(I2C_SCL_PIN, PullUp);
pixus_mbed 0:411244c71423 33 pat9125_i2c *gp_pat9125_i2c;//(I2C_SDA0, I2C_SCL0);
pixus_mbed 15:089f1d28d152 34
pixus_mbed 0:411244c71423 35
pixus_mbed 9:53b4b362cbb8 36 DigitalOut PIN_LCM_CSB(PB_6);
pixus_mbed 9:53b4b362cbb8 37 DigitalOut PIN_LCM_RSTB(PA_9);
pixus_mbed 9:53b4b362cbb8 38 DigitalOut PIN_LCM_RS(PC_7);
pixus_mbed 0:411244c71423 39
pixus_mbed 9:53b4b362cbb8 40 InterruptIn PIN_SEN_MOTION(PB_3);
pixus_mbed 9:53b4b362cbb8 41 DigitalIn motionDummy(PB_3, PullUp);
pixus_mbed 15:089f1d28d152 42
pixus_mbed 9:53b4b362cbb8 43 DigitalIn PIN_BTN_L(PA_0);
pixus_mbed 15:089f1d28d152 44 DigitalIn BTN_L_Dummy(PA_0, PullUp);
pixus_mbed 9:53b4b362cbb8 45 DigitalIn PIN_BTN_R(PA_1);
pixus_mbed 15:089f1d28d152 46 DigitalIn BTN_R_Dummy(PA_1, PullUp);
pixus_mbed 0:411244c71423 47
pixus_mbed 9:53b4b362cbb8 48 DigitalOut PIN_GLED(PA_10);
pixus_mbed 9:53b4b362cbb8 49 DigitalOut PIN_RLED(PB_4);
pixus_mbed 0:411244c71423 50 #define I2C_ADDRESS 0x73
pixus_mbed 0:411244c71423 51
pixus_mbed 0:411244c71423 52 //-----------------------------------------------------------------------
pixus_mbed 0:411244c71423 53 int main(void)
pixus_mbed 0:411244c71423 54 {
pixus_mbed 0:411244c71423 55 char addr = 0;
pixus_mbed 0:411244c71423 56 char data ;
pixus_mbed 17:2ba047d55615 57 // pc.set_flow_control(SerialBase::Disabled) ;
pixus_mbed 17:2ba047d55615 58 pc.baud(115200);
pixus_mbed 17:2ba047d55615 59 pc.printf("---------- Pixart PAT9125 Demo\n");
pixus_mbed 0:411244c71423 60
pixus_mbed 0:411244c71423 61 // +++++++ LCM Initialization +++++++ //
pixus_mbed 0:411244c71423 62 // Chip must be deselected
pixus_mbed 0:411244c71423 63 PIN_LCM_CSB = 1 ;
pixus_mbed 0:411244c71423 64
pixus_mbed 0:411244c71423 65 // Setup the spi for 8 bit data, high steady state clock,
pixus_mbed 0:411244c71423 66 // second edge capture, with a 1MHz clock rate
pixus_mbed 0:411244c71423 67 spi.format(8,3);
pixus_mbed 0:411244c71423 68 spi.frequency(1000000);
pixus_mbed 0:411244c71423 69 gp_pixart_lcm = new pixart_lcm(&spi, &PIN_LCM_CSB, &PIN_LCM_RSTB, &PIN_LCM_RS) ;
pixus_mbed 0:411244c71423 70 // ------- LCM Initialization ------- //
pixus_mbed 17:2ba047d55615 71
pixus_mbed 0:411244c71423 72 // +++++++ PAT9125 Initialization +++++++ //
pixus_mbed 1:73967d37f487 73 gp_pat9125_i2c = new pat9125_i2c(I2C_SDA_PIN, I2C_SCL_PIN);
pixus_mbed 0:411244c71423 74 gp_pat9125_i2c->frequency(400000);
pixus_mbed 0:411244c71423 75 g_pat9125_mbed_state.p_i2c = gp_pat9125_i2c;
pixus_mbed 17:2ba047d55615 76 g_pat9125_mbed_state.p_pc = &pc;
pixus_mbed 0:411244c71423 77 g_pat9125_mbed_state.pBTN_L = &PIN_BTN_L ;
pixus_mbed 0:411244c71423 78 g_pat9125_mbed_state.pBTN_R = &PIN_BTN_R ;
pixus_mbed 0:411244c71423 79 g_pat9125_mbed_state.pINT = &PIN_SEN_MOTION;
pixus_mbed 0:411244c71423 80 g_pat9125_mbed_state.pRLED = &PIN_RLED;
pixus_mbed 0:411244c71423 81 g_pat9125_mbed_state.pGLED = &PIN_GLED;
pixus_mbed 0:411244c71423 82 g_pat9125_mbed_state.pLCM = gp_pixart_lcm;
pixus_mbed 0:411244c71423 83 g_pat9125_mbed_state.slave_id = (I2C_ADDRESS << 1);
pixus_mbed 0:411244c71423 84 g_pat9125_mbed_state.sen_status = 0;
pixus_mbed 0:411244c71423 85
pixus_mbed 17:2ba047d55615 86 gp_pat9125_mbed = new pat9125_mbed(&g_pat9125_mbed_state) ;
pixus_mbed 0:411244c71423 87 gp_pixart_lcm->LCM_DisplayString_Boot(g_pat9125_mbed_state.sen_status);
pixus_mbed 17:2ba047d55615 88
pixus_mbed 0:411244c71423 89 if(g_pat9125_mbed_state.sen_status == true)
pixus_mbed 0:411244c71423 90 {
pixus_mbed 0:411244c71423 91 pc.printf("Initial Sensor ... Done\n");
pixus_mbed 0:411244c71423 92 }
pixus_mbed 0:411244c71423 93 else
pixus_mbed 0:411244c71423 94 {
pixus_mbed 0:411244c71423 95 pc.printf("Initial Sensor ... Fail\n");
pixus_mbed 0:411244c71423 96 }
pixus_mbed 0:411244c71423 97 while(true)
pixus_mbed 0:411244c71423 98 {
pixus_mbed 0:411244c71423 99 gp_pat9125_mbed->task();
pixus_mbed 0:411244c71423 100 }
pixus_mbed 0:411244c71423 101 }