Hello. I am very new at ARM7. Trying to switch ARM7 from AVR. I am using WinARM. I have checked the example codes "LED Blink" for both ATMel and LPC. for the LPC code (lpc2106_blink_switch )to turn ON a LED: GPIO_IODIR |= (1<<LEDPIN); // define LED-Pin as output GPIO_IOCLR=(1<<LEDPIN); // set all outputs in mask to 0 -> LED on I am interested to use ATMel ARM7 AT91SAM7S256 MCU but don't have any EK. So, initially I want to write a code which will simple makes a PIN high logic to turn ON a LED. I want to do this like the LPC code without adding any board header. Like, there will be a simple mail program which will define the Output PORT and make a PIN high logic of AT91SAM7S256. But all ATMel ARM7 example are for the EK. Could anyone suggest to write the main function to make a PIN high logic without adding ant board header? Actually after doing some initial code I'll make a breakout for AT91SAM7S256 chip and try to burn the HEX directly (without EK). Thanks in advance. Regards. Sakibnaz.
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Hello, I do something like: #define LED1 BIT17 AT91C_BASE_PIOA->PIO_OER = LED1; // Set as Output p_pPio->PIO_CODR = LED1; // Low p_pPio->PIO_SODR = LED1; // High ... should not be very tricky, to find out the adresses with the datasheet. Kind regards, Peter ps.: I´m using the Olimex AT91SAM7P256 with the AT91SAM7S256 on it.
Hello Peter. Thank you for your reply. Yes I have done the initial port IO Led Blinking code. Actually I am very beginner on ARM. Now checking the codes of UART. I am using Keil MDK uVision IDE. What Compiler and IDE you are using to program your Olimex-EK? Regards. Sakibnaz.
Hello Nazmus. I'm a beginner on ARM too. I use at91sam7xxxx in my board and develop with IAR EWARM. I hope you can understand my words, because my English is so poor. :) Regards. Bigwall.(from China)
Hello Bigwall. Are you using AT91SAM7X-EK? I don't have the EK yet. I use Keil MDK IDE. Regards. Sakibnaz.
Nazmus Sakib wrote: > Hello Bigwall. > > Are you using AT91SAM7X-EK? I don't have the EK yet. I use Keil MDK IDE. > > Regards. > Sakibnaz. I'm not use AT91SAM7X-EK. At first I bought a simple board with AT91SAM7S64 from "www.taobao.com" to study ARM. Then I drawn a pcb with AT91SAM7X256. The difference between 7S?? and 7X?? are only the Ethernet peripheral. But the AT91SAM7S64 study board is cheap. :p I never use Keil MDK IDE. I always use IAR EWARM. Once I tried YAGARTO toolchains, but I feel too difficult. In addition, the EWARM's simulator function is powerful, it can simulate interrupts. If I have more time, I want to study YAGARTO toolchain. Because it's free and my EWARM is [...(*)]. Regards. Bigwall. [(*) removed by Mod.]
Hello Bigwall. I never tried IAR. My target is to program AT91SAM7x256 Chip directly. I have only the Chip. I'll make a breakout board for the Chip. Do you think, is it possible to program the ARM7 chip directly as like we did for AVR (using USB, Serial or Parallel port)? Yes, I also like Open Source projects. I see YAGARTO and there are some tutorials for YAGARTO and Eclipse by Jim Lynch. Nice tutorial. But I did not test that yet. It will be a nice learning for me too :-) Did you see WinARM? Its a nice Open Source Project too. There are lots of examples by Martin Thomas for AT91SAM7 Series MCU. Thank you. Regards. Sakibnaz.
Hello Sakibnaz. Your target is feasible. The at91sam7x and at91sam7s series both have a internal boot program. It is actived by pull-up the TST pin about 10s when power on. And Atmel provide a GUI program run in Windows namely SAM-BA. Then you can program the chip by USB or serial port or J-Link. I hope it is what you want. ^_^ And thank you for introduce the WinARM to me, It will be a nice learning for me too. If you like, I hope you write e-mail to me anytime. And I'm very glad to make friend with you. My e-mail is tylr2005@126.com. Work happily! Now I wish you have a good dream. :p Regards. Bigwall.
Thank you. I appreciate. We can work together in the world of ARM7. Regards. Sakibnaz.