基于RASC的keil电子时钟制作(瑞萨RA)(1)----安装RASC

**基于RISC的Keil电子时钟制作**

**前言**

在本文中，我们将使用Keil μVision IDE（Integrated Development Environment）来开发一个基于RISC（Reduced Instruction Set Computing）的电子时钟。我们将使用瑞萨RA（RISC Architecture）作为硬件平台。

**安装RASC**

首先，我们需要安装RASC（RISC Assembly Simulator and Compiler）。可以从瑞萨官方网站下载最新版本的RASC。

1. 下载RASC安装包

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bashtar -xvf rasc-1.0.tar.gz

bash./install.sh

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File -> New Project...

Project Settings -> Language -> RISC Assembly

Project Settings -> Compiler -> RASC

assembly; Electronic Clock Program; Define variables MOV #0x00, TIME_HOURS ; Initialize hours to0 MOV #0x00, TIME_MINUTES ; Initialize minutes to0 MOV #0x00, TIME_SECONDS ; Initialize seconds to0; Main LoopLOOP:
 ; Increment seconds INC TIME_SECONDS ; Check if seconds has reached60 (1 minute)
 CMP TIME_SECONDS, #0x3C BNE NEXT_MINUTE ; Reset seconds and increment minutes MOV #0x00, TIME_SECONDS INC TIME_MINUTESNEXT_MINUTE:
 ; Check if minutes has reached60 (1 hour)
 CMP TIME_MINUTES, #0x3C BNE NEXT_HOUR ; Reset minutes and increment hours MOV #0x00, TIME_MINUTES INC TIME_HOURSNEXT_HOUR:
 ; Display time on LED display LDR R0, =TIME_HOURS LDR R1, =TIME_MINUTES LDR R2, =TIME_SECONDS BL DISPLAY_TIME; Wait for1 second before next iterationWAIT:
 MOV #0x00, TIME_SECONDS B LOOPDISPLAY_TIME:
 ; This function will display the time on an LED display ; It's not implemented here, but you can add it yourself ; using the RASC API BX LR