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@16:7bea34dc0356, 2017-10-20 (annotated)

Committer:
pixus_mbed
Date:
Fri Oct 20 11:17:05 2017 +0000
Revision:
16:7bea34dc0356
Parent:
15:089f1d28d152
Child:
17:2ba047d55615
Use pixart_lcm and pat9125_mbed libraires.

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 16:7bea34dc0356 22 //#define LCM_MODE
pixus_mbed 15:089f1d28d152 23
pixus_mbed 0:411244c71423 24 pat9125_mbed_state_s g_pat9125_mbed_state ;
pixus_mbed 0:411244c71423 25 pat9125_mbed *gp_pat9125_mbed ;
pixus_mbed 15:089f1d28d152 26 pixart_lcm *gp_pixart_lcm = NULL;
pixus_mbed 15:089f1d28d152 27 Serial *serial = NULL ;
pixus_mbed 0:411244c71423 28
pixus_mbed 15:089f1d28d152 29 #ifdef LCM_MODE
pixus_mbed 15:089f1d28d152 30 SPI spi(SPI_MOSI, SPI_MISO, SPI_SCK);
pixus_mbed 15:089f1d28d152 31 #else
pixus_mbed 15:089f1d28d152 32 Serial pc(USBTX, USBRX);
pixus_mbed 15:089f1d28d152 33 #endif
pixus_mbed 0:411244c71423 34
pixus_mbed 9:53b4b362cbb8 35 #define I2C_SDA_PIN I2C_SDA
pixus_mbed 9:53b4b362cbb8 36 #define I2C_SCL_PIN I2C_SCL
pixus_mbed 15:089f1d28d152 37 //DigitalIn sdaDummy(I2C_SDA_PIN, PullUp);
pixus_mbed 15:089f1d28d152 38 //DigitalIn sclDummy(I2C_SCL_PIN, PullUp);
pixus_mbed 0:411244c71423 39 pat9125_i2c *gp_pat9125_i2c;//(I2C_SDA0, I2C_SCL0);
pixus_mbed 15:089f1d28d152 40
pixus_mbed 0:411244c71423 41
pixus_mbed 9:53b4b362cbb8 42 DigitalOut PIN_LCM_CSB(PB_6);
pixus_mbed 9:53b4b362cbb8 43 DigitalOut PIN_LCM_RSTB(PA_9);
pixus_mbed 9:53b4b362cbb8 44 DigitalOut PIN_LCM_RS(PC_7);
pixus_mbed 0:411244c71423 45
pixus_mbed 9:53b4b362cbb8 46 InterruptIn PIN_SEN_MOTION(PB_3);
pixus_mbed 9:53b4b362cbb8 47 DigitalIn motionDummy(PB_3, PullUp);
pixus_mbed 15:089f1d28d152 48
pixus_mbed 9:53b4b362cbb8 49 DigitalIn PIN_BTN_L(PA_0);
pixus_mbed 15:089f1d28d152 50 DigitalIn BTN_L_Dummy(PA_0, PullUp);
pixus_mbed 9:53b4b362cbb8 51 DigitalIn PIN_BTN_R(PA_1);
pixus_mbed 15:089f1d28d152 52 DigitalIn BTN_R_Dummy(PA_1, PullUp);
pixus_mbed 0:411244c71423 53
pixus_mbed 9:53b4b362cbb8 54 DigitalOut PIN_GLED(PA_10);
pixus_mbed 9:53b4b362cbb8 55 DigitalOut PIN_RLED(PB_4);
pixus_mbed 0:411244c71423 56 #define I2C_ADDRESS 0x73
pixus_mbed 0:411244c71423 57
pixus_mbed 0:411244c71423 58 //-----------------------------------------------------------------------
pixus_mbed 0:411244c71423 59 int main(void)
pixus_mbed 0:411244c71423 60 {
pixus_mbed 15:089f1d28d152 61 int i = 0;
pixus_mbed 0:411244c71423 62 char addr = 0;
pixus_mbed 0:411244c71423 63 char data ;
pixus_mbed 0:411244c71423 64
pixus_mbed 15:089f1d28d152 65 #ifdef LCM_MODE
pixus_mbed 0:411244c71423 66 // +++++++ LCM Initialization +++++++ //
pixus_mbed 0:411244c71423 67 // Chip must be deselected
pixus_mbed 0:411244c71423 68 PIN_LCM_CSB = 1 ;
pixus_mbed 0:411244c71423 69
pixus_mbed 0:411244c71423 70 // Setup the spi for 8 bit data, high steady state clock,
pixus_mbed 0:411244c71423 71 // second edge capture, with a 1MHz clock rate
pixus_mbed 0:411244c71423 72 spi.format(8,3);
pixus_mbed 0:411244c71423 73 spi.frequency(1000000);
pixus_mbed 0:411244c71423 74 gp_pixart_lcm = new pixart_lcm(&spi, &PIN_LCM_CSB, &PIN_LCM_RSTB, &PIN_LCM_RS) ;
pixus_mbed 0:411244c71423 75 // ------- LCM Initialization ------- //
pixus_mbed 15:089f1d28d152 76 #else
pixus_mbed 15:089f1d28d152 77 serial = &pc ;
pixus_mbed 15:089f1d28d152 78 //pc.set_flow_control(SerialBase::Disabled) ;
pixus_mbed 15:089f1d28d152 79 pc.baud(115200);
pixus_mbed 15:089f1d28d152 80 pc.printf("---------- Pixart PAT9125 Demo\n");
pixus_mbed 15:089f1d28d152 81 #endif
pixus_mbed 0:411244c71423 82 // +++++++ PAT9125 Initialization +++++++ //
pixus_mbed 1:73967d37f487 83 gp_pat9125_i2c = new pat9125_i2c(I2C_SDA_PIN, I2C_SCL_PIN);
pixus_mbed 0:411244c71423 84 gp_pat9125_i2c->frequency(400000);
pixus_mbed 0:411244c71423 85 g_pat9125_mbed_state.p_i2c = gp_pat9125_i2c;
pixus_mbed 15:089f1d28d152 86 g_pat9125_mbed_state.p_pc = serial;
pixus_mbed 0:411244c71423 87 g_pat9125_mbed_state.pBTN_L = &PIN_BTN_L ;
pixus_mbed 0:411244c71423 88 g_pat9125_mbed_state.pBTN_R = &PIN_BTN_R ;
pixus_mbed 0:411244c71423 89 g_pat9125_mbed_state.pINT = &PIN_SEN_MOTION;
pixus_mbed 0:411244c71423 90 g_pat9125_mbed_state.pRLED = &PIN_RLED;
pixus_mbed 0:411244c71423 91 g_pat9125_mbed_state.pGLED = &PIN_GLED;
pixus_mbed 0:411244c71423 92 g_pat9125_mbed_state.pLCM = gp_pixart_lcm;
pixus_mbed 0:411244c71423 93 g_pat9125_mbed_state.slave_id = (I2C_ADDRESS << 1);
pixus_mbed 0:411244c71423 94 g_pat9125_mbed_state.sen_status = 0;
pixus_mbed 0:411244c71423 95
pixus_mbed 15:089f1d28d152 96 gp_pat9125_mbed = new pat9125_mbed(&g_pat9125_mbed_state) ;
pixus_mbed 15:089f1d28d152 97 #ifdef LCM_MODE
pixus_mbed 0:411244c71423 98 gp_pixart_lcm->LCM_DisplayString_Boot(g_pat9125_mbed_state.sen_status);
pixus_mbed 15:089f1d28d152 99 #else
pixus_mbed 0:411244c71423 100 if(g_pat9125_mbed_state.sen_status == true)
pixus_mbed 0:411244c71423 101 {
pixus_mbed 0:411244c71423 102 pc.printf("Initial Sensor ... Done\n");
pixus_mbed 0:411244c71423 103 }
pixus_mbed 0:411244c71423 104 else
pixus_mbed 0:411244c71423 105 {
pixus_mbed 0:411244c71423 106 pc.printf("Initial Sensor ... Fail\n");
pixus_mbed 0:411244c71423 107 }
pixus_mbed 15:089f1d28d152 108 #endif
pixus_mbed 0:411244c71423 109 while(true)
pixus_mbed 0:411244c71423 110 {
pixus_mbed 0:411244c71423 111 gp_pat9125_mbed->task();
pixus_mbed 0:411244c71423 112 }
pixus_mbed 15:089f1d28d152 113
pixus_mbed 0:411244c71423 114 }