# Display ADC via Potentiometer on OLED ## *Lab Objective:* This lab demonstrates the process of reading a potentiometer sensor value through an Analog-to-Digital Converter (ADC) and display with OLED on a PSoC 6 microcontroller. ## 🔥 Requirements

Resources	Links
Computer	💻
ModusToolbox™ software v3.0 or later	Link
CY8CKIT-062S2-43012 Infineon Board	Link
Technical Report	dropbox

## 🚩 Let start ### Create Application

### Coding * Coding: Open the main.c file and add the following code to the main(void) function. {% code title="main.c" %} ```c #include "cyhal.h" #include "cybsp.h" #include "stdio.h" #include "cy8ckit_028_sense.h" #include "GUI.h" // Define function void lcd_print_top(const char * s); void lcd_print_bot(const char * s); void lcd_print_line_n(const char * s,int linenum); cyhal_i2c_t i2c; cyhal_i2c_cfg_t i2c_cfg = { .is_slave = false, .address = 0, .frequencyhal_hz = 400000 }; int main(void) { cy_rslt_t result; cyhal_adc_t adc_obj; cyhal_adc_channel_t adc_chan_0_obj; char str[80]; /* Initialize the device and board peripherals */ result = cybsp_init(); CY_ASSERT(result == CY_RSLT_SUCCESS); __enable_irq(); /* Initialize i2c */ result = cyhal_i2c_init(&i2c, CY8CKIT_028_SENSE_PIN_I2C_SDA, CY8CKIT_028_SENSE_PIN_I2C_SCL, NULL); CY_ASSERT(result == CY_RSLT_SUCCESS); result = cyhal_i2c_configure(&i2c, &i2c_cfg); CY_ASSERT(result == CY_RSLT_SUCCESS); /* Initialize the OLED display */ result = mtb_ssd1306_init_i2c(&i2c); CY_ASSERT(result == CY_RSLT_SUCCESS); /* ADC conversion result. */ int adc_out; /* Initialize ADC. The ADC block which can connect to pin 10[6] is selected */ result = cyhal_adc_init(&adc_obj, P10_6, NULL); // ADC configuration structure const cyhal_adc_config_t ADCconfig ={ .continuous_scanning = false, .resolution = 12, .average_count = 1, .average_mode_flags = 0, .ext_vref_mv = 0, .vneg = CYHAL_ADC_VNEG_VREF, .vref = CYHAL_ADC_REF_VDDA, .ext_vref = NC, .is_bypassed = false, .bypass_pin = NC }; // Configure to use VDD as Vref result = cyhal_adc_configure(&adc_obj, &ADCconfig); /* Initialize ADC channel, allocate channel number 0 to pin 10[6] as this is the first channel initialized */ const cyhal_adc_channel_config_t channel_config = { .enable_averaging = false, .min_acquisition_ns = 220, .enabled = true }; result = cyhal_adc_channel_init_diff(&adc_chan_0_obj, &adc_obj, P10_6, CYHAL_ADC_VNEG, &channel_config); GUI_Init(); for (;;) { /* Read the ADC conversion result for corresponding ADC channel. Repeat as necessary. */ adc_out = cyhal_adc_read(&adc_chan_0_obj); sprintf(str,"ADC = %d\r\n", adc_out); lcd_print_top(str); cyhal_system_delay_ms(100); sprintf(str,"Applied ES Lab"); lcd_print_line_n(str,2); sprintf(str,"Lab 112 ADC read"); lcd_print_line_n(str,4); lcd_print_bot("Template"); cyhal_system_delay_ms(1000); } } // Create function for OLED void lcd_print_top(const char * s){ GUI_GotoXY(0,0); GUI_DispString(s); } void lcd_print_bot(const char * s){ GUI_GotoXY(0,50); GUI_DispString(s); } void lcd_print_line_n(const char * s,int linenum){ //linenum is 1-6 int line = (linenum-1)*10; GUI_GotoXY(0,line); GUI_DispString(s); } ``` {% endcode %}

### Build the Application

### Launching the Application

> Note: Before launching the program to the board, make sure that you have already connected the board to the computer through a USB cable.

### Result

> #### 🎉 Congratulations! You can now complete Lab105 ## Supported toolchains (make variable 'TOOLCHAIN') * GNU Arm® embedded compiler v10.3.1 (`GCC_ARM`) - Default value of `TOOLCHAIN` * Arm® compiler v6.16 (`ARM`) * IAR C/C++ compiler v9.30.1 (`IAR`) ## Supported kits (make variable 'TARGET') * [PSoC™ 62S2 Wi-Fi Bluetooth® pioneer kit](https://www.infineon.com/CY8CKIT-062S2-43012) (`CY8CKIT-062S2-43012`) * [PSoC™ 62S1 Wi-Fi Bluetooth® pioneer kit](https://www.infineon.com/CYW9P62S1-43438EVB-01) (`CYW9P62S1-43438EVB-01`) * [PSoC™ 62S1 Wi-Fi Bluetooth® pioneer kit](https://www.infineon.com/CYW9P62S1-43012EVB-01) (`CYW9P62S1-43012EVB-01`) * [PSoC™ 62S3 Wi-Fi Bluetooth® prototyping kit](https://www.infineon.com/CY8CPROTO-062S3-4343W) (`CY8CPROTO-062S3-4343W`) ## Related resources | Resources | Links | | ------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- | | ModusToolbox™ Software Training | [link](https://www.dropbox.com/sh/waj898o4o8eccx0/AAB3hBBaIQo2OvJ5-fubGJIha/training-modustoolbox-level1-getting-started-master/Manual/Ch2-Tools.pdf?dl=0) | ## Other resources Infineon provides a wealth of data at [www.infineon.com](http://www.infineon.com) to help you select the right device, and quickly and effectively integrate it into your design. ## Document history Document title: *BILL\_MTB-107* – Read potentiometer sensor value via an ADC HAL

Version	Description of change
1.0.0	Lab 107: Learn basic OLED control with PSoC 6, using ADC read potentiometer sensor value and display on OLED.

## Authors: * *Assoc. Prof. Wiroon Sriborrirux* * *Mr. Sriengchhun Chheang* * *Mr. Sabol Socare*

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