msp430 lcd display code pricelist

Alphanumerical LCDs are probably the easiest devices to quickly project information visually. They are easy to use and cheap. To be able to use them, we do not need any additional hardware feature of a micro or any special communication hardware like I2C and SPI. Digital I/Os are what we need to use these displays. Just like my other tutorials, this tutorial includes three LCD examples – one with software SPI communication, one with software I2C communication and one with direct DIO-based 4-bit LCD interface.

Be sure to use 3.3V compatible LCD because most of them don’t operate at 3.3V power level. Most of the LCD are designed for 5V operation. It is okay to use 5V power supply for powering LCD if there is no other option. LCDs accept 0V – 3.3V logic level. However, there should be no way with which a 5V power supply/device can get connected with MSP430’s 3.3V power bus.

Most popularly alphanumerical LCDs are driven in 4-bit data mode and this is what that has been done here. First let’s see some typical LCD instructions.

Since alphanumerical displays utilize GPIOs, there’s hardly anything to explain here. Try not to use GPIOs that have alternate roles because you may never know when would you need their alternative functions.

Most popularly alphanumerical LCDs are driven in 4-bit data mode and this is what that has been done here. First let’s see some typical LCD instructions.

This article is the continuation of our tutorial series on programming MSP430 using Code Composer Studio. Last tutorial was based on GPIO pins. This tutorial is about interfacing a display with MSP430, when it comes to display the 16*2 LCD Display,it is the first choice for any electronic hobbyist. Previously we have also interfaced LCD with MSP430 using Arduino IDE, in this tutorial, we will use the native Code Composer studio platform instead of using the Arduino IDE, this way as a designer, we get more flexibility.

It has an in-built IC hd44780 that can store the command and data passed to it. The LCD Module has about 16 pins. 8 of which are data pins, 4 of them are supply pins for backlight LED and the whole LCD module, 3 for controlling the operation, and 1 pin for contrast adjustment. The tutorial is based on the library created by Dennis Eichmann. It is very easy to use a library with separate functions to print different data types. It also has provisions to display the data in different forms with leading, blanked, and deleted zeroes. It is a pretty expansive and comprehensive library and is configurable to the different connections. Here, the header file is modified to accommodate an 8-pin parallel configuration for data communication.

A generic 16x2 Display has an inbuilt hd44780 IC(circled in red below), that can store the command and data passed to it. The LCD Module has about 16 pins. 8 of which are data pins, 4 of them are supply pins for backlight LED and the whole LCD module, 3 for controlling the operation, and 1 pin for contrast adjustment.

This LCD module is shown above versatile and uses minimum pins compared to other segmented LCDs. If you are curious to know how exactly all this works, you should check out the working of the 16x2 LCD display where we have already discussed how the LCD works in detail.

RS Pin: RS=1 will enable the data register in the LCD, which is used to write the values to the data register in LCD. RS=0 will enable the Instruction register of the LCD.

Enable pin: Negative edge-triggered; when the pin is changed from the HIGH state to LOW state, LCD is prompted to write to the data pins. Positive edge-triggered; when the pin is changed from the LOW state to HIGH state, LCD is prompted to read from the data pins.

The tutorial is based on the library created by Dennis Eichmann. It is very easy to use a library with separate functions to print different data types. It also has provisions to display the data in different forms with leading, blanked, and deleted zeroes. It is a pretty expansive and comprehensive library and is configurable to the different connections. Here, the header file is modified to accommodate an 8-pin parallel configuration for data communication. The library can be download from the below link, after downloading you follow the below steps to add the library to CCS.

In the properties dialog box of the hd44780 project and inside the include options for the MSP430 compiler, add the include folder in file the search path.

In the properties dialog box for the CCS_LCD project and in the file search path of MSP430 Linker tab, include the hd44780.lib located inside the debug folder of the hd44780 project. The debug folder is also included in the file search path.

void hd44780_timer_isr( void ):This is periodically called in the ISR of the Timer A. The Timer A is used to periodically do the LCD functions like clearing the screen, setting the cursor, and displaying the data. The function is to be used in the ISR. It returns nothing.

char * ch__string:The string to be written to the data buffer (inside the hd44780_timer_isrfunction). The data will be copied to the data register and instruction register of the LCD IC when the hd44780_timer_isris periodically called.

uint8_t hd44780_output_unsigned_16bit_value( uint16_t u16__value, uint8_t u8__leading_zero_handling, uint8_t u8__row, uint8_t u8__column, uint8_t u8__cr_lf ):The function will display the unsigned 16-bit value on the desired location of the LCD.

The anode of the LED backlight cannot be connected directly to a 5V supply. It should be connected to a resistance to minimize the current flow through the LCD Module. I have made my connections using a perf board to solder the LCD and then used jumper wires to connect the LCD with the MSP430 board, my set-up looks like this below but you can also simply use a breadboard to make your connections.

The complete code used in this project is given at the bottom of this page. The explanation of using the code is as follows. First, open the header file (hd44780.h) and include the microcontroller part number in the first part of the file.

Inbuilt timer is being used to display values periodically. Timer A is selected with SMCLK (1MHZ) as the clock source and continuous mode being the mode of operation.

Once you have your code compiled, you can upload it to the MSP430 board, as explained in the getting started with the MSP430 tutorial. If everything goes as expected, you should see your LCD display some contrast as shown below.

4.01.05.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M16C60 family of microcontrollers and IAR compiler

4.01.09.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M16C80 family of microcontrollers and IAR compiler

4.01.10.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M32C family of microcontrollers and IAR compiler

4.01.11.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for NEC78K4 family of microcontrollers and IAR compiler

4.01.06.02Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M16C60 family of microcontrollers and Tasking compiler

4.01.08.04Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M16C60 family of microcontrollers and NC30 compiler

4.01.09.04Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M16C80 family of microcontrollers and NC308 compile

4.01.12.03Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for NEC V850SA1 and Green Hills Multi 2000 compiler

4.01.13.03Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for NEC V850SF1 and Green Hills Multi 2000 compiler

4.01.16.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas R32C family of microcontrollers and IAR compiler

4.01.16.04Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas R32C family of microcontrollers and HEW compiler

4.01.17.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas M16C65 family of microcontrollers and IAR compiler

4.01.20.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas R8C family of microcontrollers and IAR compiler

4.01.23.01Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for NXP LPC17xx family of microcontrollers and IAR compiler

4.01.23.02Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for TI LM3Sxx family of microcontrollers and IAR compiler

4.01.23.03Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for ST STM32L15x family of microcontrollers and IAR compiler

4.01.23.04Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for ST STM32F10x family of microcontrollers and IAR compiler

4.01.23.06Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for NXP Kinetis K10 family of microcontrollers and Keil compiler

4.01.23.07Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for ST STM32F2 family of microcontrollers and Keil compiler

4.01.23.08Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for ST STM32F4 family of microcontrollers and IAR compiler

4.01.23.10Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for NXP Kinetis K10 family of microcontrollers and Keil compiler

4.01.34.04Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas RX family of microcontrollers and HEW compiler

4.01.34.06Hexloader (PC program) and source code Bootloader, unlimited usage of hexload.exe including port for Renesas RX family of microcontrollers and IAR compiler

Special commands for LCD-displays , I2C chips and 1WIRE chips, PC keyboard, matrix keyboard, RC5 reception, software UART, SPI master and slave, IR remote code, graphical LCD"s

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

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