How many GPIO pins are there in LPC2148?

How many GPIO pins are there in LPC2148?

LPC2148 has two 32-bit General Purpose I/O ports. Out of these 32 pins, 28 pins can be configured as either general purpose input or output.

What is GPIO in LPC2148?

General purpose input output (GPIO) is same thing you find in any microcontroller like 8051, avr etc. Lpc2148 have two General Purpose I/O ports port 0 & port1. port0 & port1 both are 32-bit bi-directional ports like 8051 has four 8-bit bi-directional ports.

Which port pin of LPC2148 is always output?


P0.0-P0.31 P1.16-P1.31 Input/output General purpose input/output. The number of GPIOs actually available depends on the use of alternate functions.

Which port pins of port1 is not accessible in LPC2148?

26 & P0. 27 are unavailable for use and Pin P0. 30 can be used as output pin only. Port 1 is also a 32 bit wide I/0 port but Pins 0 to 15 i.e P1.

What size is LPC2148?

The LPC2148 is a 16 bit or 32 bit ARM7 family based microcontroller and available in a small LQFP64 package. ISP (in system programming) or IAP (in application programming) using on-chip boot loader software.

What is LPC2148?

The NXP (founded by Philips) LPC2148 is an ARM7TDMI-S based high-performance 32-bit RISC Microcontroller with Thumb extensions 512KB on-chip Flash ROM with In-System Programming (ISP) and In-Application Programming (IAP), 32KB RAM, Vectored Interrupt Controller, Two 10bit ADCs with 14 channels, USB 2.0 Full Speed …

What is the use of GPIO pins?

The GPIO pins are one way in which the Raspberry Pi can control and monitor the outside world by being connected to electronic circuits. The Pi can control LEDs, turning them on or off, drive motors, and interact with many other objects.

How many I O port pins are available in port 0 of LPC2148?

two IO ports
LPC2148 has two IO ports namely PORT0 (P0) and PORT1 (P1). These two IO ports are of 32-bit wide and are provided by the 64 pins of the microcontroller. The naming convention of the I/O pins on the LPC2148 Microcontroller is Pa.

What is ARM LPC2148?

LPC2148 is a single-chip 16/32-bit RISC Microcontroller with 512KB on-chip Flash ROM with In-System Programming (ISP) and In-Application Programming (IAP) 32KB RAM having Interrupt Controller, Two 10bit ADCs with 14 channels, USB 2.0 Full Speed Device Controller, Two UARTs, one with full modem interface.

How do I program my LPC2148?

Below are the steps for flashing the the ARM LPC2148:

  1. Select the LPC2148.
  2. Give the COM port number according to Device Manager (Mine was COM7)
  3. Give baud rate as 38400.
  4. Oscillator as 12 Mhz.
  5. Tick “Erase blocks used by firmware”
  6. Now select the hex file path.
  7. Tick verify after programming checkbox.
  8. And click START.

What is a GPIO port?

A GPIO port is a platform-defined grouping of GPIO pins that can be configured for output or input. Like GPIO pins, each GPIO port is identified by a numerical ID and by a name. Output ports are both writable and readable while input ports are only readable.

What are features of LPC2148?

LPC2148 Key Features: 16/32-bit ARM7TDMI Microcontroller in a tiny LQFP64 package. 40 kB of on-chip static RAM and 512 kB of on-chip flash memory. 128-bit wide interface/accelerator enables high-speed 60 MHz operation. In-System Programming/In-Application Programming (ISP/IAP) via on-chip boot loader software.

How many external interrupt pins available for LPC2148?

The Vectored Interrupt Controller (VIC) takes 32 interrupt request inputs and programmable assigns them into 3 categories, FIQ, vectored IRQ, and non-vectored IRQ. The ARM7 has two numbers of External Interrupts, connected with I/O Port lines (P0. 14 & P0. 15) as switches.

How do I read GPIO pins?

The basic steps to use a GPIO pin from the sysfs interface are the following:

  1. Export the pin.
  2. Set the pin direction (input or output).
  3. If an output pin, set the level to low or high.
  4. If an input pin, read the pin’s level (low or high).
  5. When done, unexport the pin.

What is GPIO pin used for?

A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit board which may be used as an input or output, or both, and is controllable by software. GPIOs have no predefined purpose and are unused by default.

What can you use GPIO for?

A GPIO (general-purpose input/output) port handles both incoming and outgoing digital signals. As an input port, it can be used to communicate to the CPU the ON/OFF signals received from switches, or the digital readings received from sensors.

How do I enable GPIO?

Alternatively, enter sudo raspi-config on the command line, and enable Remote GPIO. This is functionally equivalent to the desktop method. This will allow remote connections (until disabled) when the pigpio daemon is launched using systemctl (see below).

What does each GPIO do?

GPIO pins are digital which means they can have two states, off or on. They can have a direction to receive or send current (input, output respectively) and we can control the state and direction of the pins using programming languages such as Python, JavaScript, node-RED etc.

How do I find my GPIO number?

The Linux GPIO number for a certain GPIO pin can be determined by adding the GPIO pin index to the port base index. For instance: i. MX6 GPIO2_4 (port 2, pin 4) is: 32 + 4 = 36.

How do I trigger a GPIO pin?

The LED attached to GPIO pin 21 should turn ON when the momentary button is pressed and OFF when the button is released. The LED attached to GPIO pin 22 should turn ON when the momentary button is pressed and OFF when the button is released.

Which GPIO pins can I use?

While we will cover some of the pins with special uses in this article, you can use any pins except the power pins, and pins 27 and 28 as regular GPIO pins.