... cdecl> explain char *a[4] declare a as array 4 of pointer to char cdecl> explain char **a declare a as pointer to pointer to char cdecl> explain char...
... Oops. Try this. http://sourceforge.net/projects/uez Regards, Richard. + http://www.FreeRTOS.org Designed for Microcontrollers. More than 7000 downloads...
Not to defend the OP, but the Keil website still has an old rev of the UM. However, he didn't say he couldn't find the latest document. He said he couldn't...
... Great if you already know it's called the user manual... his message implied he was searching for the term 'datasheet'. I'm guessing he found it, but with...
... Doesn't change the fact that the NXP site would be the best place to look if you were looking for documentation on an NXP part. Regards, Richard. +...
Hi to all! Can someone give me some ideas on how to realize this specific application? Application: Need to read 100 buttons, and when a specified button is...
You might want to consider SPI based stepper motor drivers. It could save some software headaches and you could probably drive all hundred motors from just one...
... Hi Franco, I worry you are too optimistic thinking about I2C in motor application. Noise could be problem. I would recommend something like CAN bus (better...
... When you consider the size of the IO interface (the PCB area) for connections and a stepper driver, it might make more sense to just use 1 uC per...
... No, you do not have an emergency. An emergency is a fire or some other life threatening problem. Unless you're 3 or 4 years old and then it can include...
Yes Richard your suggestions are right, yhe only issue I see is when I have to change the voice (example voice1: button1->motor1; voice2: button1->motor1 and...
Hi Vladimir All motors will be driven by a motor driver, and all motors are 4 wire motors and will be all off boards. Well here are timmings: 20ms to detect...
... How many steps in 30 ms? The basic stepper motor (removed from old floppy drive) will give 600 rpm with light load. As some one suggested, using a PIC, for...
Hello, I'm afraid your "friend at NXP" is incorrect. We are shipping the LPC1700 to key partners right now and you will be able to buy them from distributors...
... Since timings are not that critical you can also think of RS485 protocol. Warm Regards, Mr. Mukund Deshmukh, Beta Computronics Pvt Ltd. 10/1 IT Park,...
... Hi Franco, My job is just warning, because I had some troubles with noise. From logic of control/uCs economy your solution is good. Good luck! Please, let...
Hi All, just wondering if I'm doing this correctly with pointers register DYNAMIC_MEM0_BASE is defined like this #define DYNAMIC_MEM0_BASE (*(volatile...
If the dynamic memory starts at 0xA000000, you can do: #define DYNAMIC_MEM0_BASE 0xA0000000 #define DYNAMIC_MEM0_U8 ((unsigned char*)DYNAMIC_MEM0_BASE) #define...
Jan Vanek
j3vanek@...
Jun 1, 2009 5:02 pm
42186
Hi, I tried the Keil SPI code, there are many errors. From the Keil site, the "AA missing" problem is about an old compiler. So I made a new Project, import...
For those who may find it of interest: http://www.freertos.org/Free-RTOS-For-NXP-Cortex-M3-LPC17xx.html This demo will be developed over time - especially when...
Hi i use the folowing macro's for the same purpose: /* ______ MACROS ______________________________________________________________ */ #define LOBYTE(w)...
not too sure about bitfields, I just stay away how else would you modify certain bits? you need to read-modify-write say if you have a 32bit register and need...
... Yes, on those regs for which read-modify-write is ALLOWED. There are regs for which it is not allowed. Or, more properly, it doesn't work. Or there is a...
I have a test program I have pieced together/written to utilize I2C functionality. I get the program to compile and debug, to nak, but then it does not run...
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