Making the LED Blink (PI5) - Versionsgeschichte

Satyria: /* Compiling and Running */

2024-08-23T10:46:02Z

Compiling and Running

← Nächstältere Version		Version vom 23. August 2024, 11:46 Uhr
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	\| style="width: 33%; text-align:center;" \| [[English\|< Home >]]		\| style="width: 33%; text-align:center;" \| [[English\|< Home >]]
	\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next (Error Handling) >]]		\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next (Error Handling) >]]
	\|}

	{\|
	\|-
	~~\| style="width: 33%; text-align:left;" \| [[Our First Program (PI5)\|< Back]] \|\| style="width: 33%" \|[[English\|^ Home]] \|\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next >]]~~
	\|}		\|}

2024-08-23T10:45:46Z

Compiling and Running

← Nächstältere Version		Version vom 23. August 2024, 11:45 Uhr
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	You can download the source code as a ZIP file from the following link: https://www.satyria.de/arm/sources/assem/led.zip		You can download the source code as a ZIP file from the following link: https://www.satyria.de/arm/sources/assem/led.zip

			-----

			{\| style="width: 100%;
			\| style="width: 33%;" \| [[Our First Program (PI5)\|< Back (Our First Program (PI5))]]
			\| style="width: 33%; text-align:center;" \| [[English\|< Home >]]
			\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next (Error Handling) >]]
			\|}

	{\|		{\|
	\|-		\|-
	\| style="width: 33%; text-align:left;" \| [[Our First Program (PI5)\|< Back]] \|\| style="width: 33%" \|[[English\|^ Home]] \|\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next >]]		\| style="width: 33%; text-align:left;" \| [[Our First Program (PI5)\|< Back]] \|\| style="width: 33%" \|[[English\|^ Home]] \|\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next >]]
	\|}		\|}

2024-08-22T07:27:13Z

Compiling and Running

← Nächstältere Version		Version vom 22. August 2024, 08:27 Uhr
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	You can download the source code as a ZIP file from the following link: https://www.satyria.de/arm/sources/assem/led.zip		You can download the source code as a ZIP file from the following link: https://www.satyria.de/arm/sources/assem/led.zip
			{\|
			\|-
			\| style="width: 33%; text-align:left;" \| [[Our First Program (PI5)\|< Back]] \|\| style="width: 33%" \|[[English\|^ Home]] \|\| style="width: 33%; text-align:right;" \| [[Error Handling\|Next >]]
			\|}

2024-08-19T19:22:44Z

Compiling and Running

← Nächstältere Version		Version vom 19. August 2024, 20:22 Uhr
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	=== Compiling and Running ===		=== Compiling and Running ===
	Switch to the LED directory and compile the program with the command "make". If everything was successful, you will get a file named kernel_2712.img, which can be copied to an SD card and used in the Raspberry Pi. Turn on the Raspberry Pi, and the LED should blink.		Switch to the LED directory and compile the program with the command "make". If everything was successful, you will get a file named kernel_2712.img, which can be copied to an SD card and used in the Raspberry Pi. Turn on the Raspberry Pi, and the LED should blink.

			You can download the source code as a ZIP file from the following link: https://www.satyria.de/arm/sources/assem/led.zip

2024-08-12T12:00:44Z

Wait Function wait

2024-08-12T11:58:36Z

LED Control Functions

← Nächstältere Version		Version vom 12. August 2024, 12:58 Uhr
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	// led.S		// led.S
	//		//

	#include "base.h"		#include "base.h"

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	.globl LED_off		.globl LED_off
	LED_off:		LED_off:
	ldr x1, =ARM_GPIO2_DATA0		ldr x1, =ARM_GPIO2_DATA0
	ldr w0, [x1]		ldr w0, [x1]
	bic w0, w0, #0x200		bic w0, w0, #0x200
	str w0, [x1]		str w0, [x1]
	ret		ret

	// void LED_on(void) // Turns on the LED		// void LED_on(void) // Turns on the LED
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	.globl LED_on		.globl LED_on
	LED_on:		LED_on:
	ldr x1, =ARM_GPIO2_DATA0		ldr x1, =ARM_GPIO2_DATA0
	ldr w0, [x1]		ldr w0, [x1]
	orr w0, w0, #0x200		orr w0, w0, #0x200
	str w0, [x1]		str w0, [x1]
	ret		ret
	</syntaxhighlight>		</syntaxhighlight>

2024-08-12T11:55:39Z

Main Program main

2024-08-12T11:53:45Z

Function sysinit

2024-08-12T11:52:40Z

Importance and Structure of Header Files

2024-08-12T11:51:42Z

Programming the Raspberry Pi's Boot Behavior

← Nächstältere Version		Version vom 12. August 2024, 12:51 Uhr
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	// boot.S		// boot.S
	//		//
	~~#include "config.h"~~

	.section .init // Ensure the linker places this at the beginning of the kernel image		#include “config.h”
	.global _start // Execution starts here
			.section .init // Ensure the linker places this at the beginning of the kernel image
			.global _start // Execution starts here

	_start:		_start:
	ldr x0, =MEM_KERNEL_STACK		ldr x0, =MEM_KERNEL_STACK
	mov sp, x0 // ~~initialize the~~ stack		mov sp, x0 // init its stack
	b sysinit		b sysinit
	</syntaxhighlight>		</syntaxhighlight>
	'''Explanation:'''		'''Explanation:'''