# 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*

*** © BDH Corporation, 2022-2023 --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.aic-eec.com/embedded-systems/enbedded-system-development-via-psoc6/sensor-interfacing-and-hmi/oled-display/display-adc-via-potentiometer-on-oled.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.