Hi!

When is the set IE.EA bit effective?

1.: Right after the instruction that sets EA? Or 2.: After the instruction starts, that immediately follows the instruction that sets EA?

I'm asking, because: I am concerned that the MCU sleeps too long, if an interrupt is executed at [AAA] in my example...

Thx.

Bye.

example:

deepsleep:
   clr (IE+EA)
   jb (WORK_PENDING), main
   setb (IE+EA)
   ; [AAA]
   orl (PCON1), #SUSPENDen
   ajmp main

 

I'm working on a project where i'm making an elevator for 4 levels

Normally there are buttons inside the elevator for choosing the wanted level

and Buttons outside of it to request it wherever the elevator is

I need  C implementation for the buttons outside of it , in other words if it's going up from 1st floor to 4th one  and i'm outside at 2nd floor i will press the button and it shall stop

and if i pressed down from outside it will ignore the press and continue going up and come back to me after it finishes going up

it probably needs interrupt or if there is an easier way

my code for in buttons 

Set Duty Cycle is for servo motor to pull elevator

i'm using c8051F02x toolkit and silicon lab IDE

void main (void) {
    EA  = 1;		/* Enable global interrupt */
    ET0 = 1;         	/* Enable timer0 interrupt */
    Timer_init();
	Port_Init();
while(1)
{

                
   if(Level0 == 0 )
   {
	Set_DutyCycle_To(0.6);
    }

   else if(Level1 == 0 )
   {
	Set_DutyCycle_To(1.2);
    }

	else if(Level2 == 0 )
   {
	Set_DutyCycle_To(1.9);
	}

	else if(Level3 == 0 )
   {
	Set_DutyCycle_To(2.6);
    }
	else
	{
	/* do Nothing*/
	}
	}
}

 

I'm implementing a class-compliant USB MIDI device in the EFM8UB2. As a background, the class uses a Bulk OUT endpoint for messages from the host to the device, and it uses a Bulk IN endpoint for messages from the device to the host.

I have the device-to-host direction working on the EFM8UB2 starter kit BRD5001A. I'm using the Efm8_usb library.

I can press one of the buttons or wiggle the joystick, and using a call to USBD_Write() the messages get sent to the host, as verified by the MIDI Tools program for the Mac.

But i'm baffled about the host-to-device direction. The computer can generate MIDI messages that it sends over the correct endpoint, and I have to read them in the micro. To do that I assume I need to call USBD_Read() ... but when? Do I call it from my main loop and inspect the return value? I assume that I'll use the USBD_XferCompleteCb() callback to do something, but I have no idea.

And there are no examples that use USBD_Read() from an endpoint other than the control. I'm sure there's something hidden in USBXpress but as I said I'm doing a class-compliant design and I don't need USBXpress. I thought there was an example of how to implement a Vendor-defined generic device that uses Bulk IN and OUT endpoints but I cannot find it.

The library documentation is unfortunately typical Doxygen. It describes what the functions and such all do, but not why or how they are to be used. I mean, here's the description of USBD_Read():

"Start a read (OUT) transfer on an endpoint."

Yeah, no kidding. But how about context or an example?

Is it possible to use the JTAG as just another communication interface?

I work with C8051F122 and I used up all my UART peripherals, it would be nice to have another interface to connect my PC and MCU. Don't intend to use it in production code, just for debugging and development. 

A bit about the way I like to use it. My code would be freely running, it would update certain parts of the RAMM. Can I write a script that runs on my PC that will be able to query these RAM address regularly, without stopping or resetting the code?  

I know silabs IDE , Keil have the JTAG debug mode, and I can add variables to a watch list etc , but I'm only able to look at the variables by pausing the code, I like something a bit more real time. 

Is something like that possible ?

 

 

 

 

I tried to connect my C8051F581 board with my PC using IDE Keil5. But It is not connecting.  I tried to download 

USBHID.DLL, SiC8051F.DLL these files but i can't find those files.

i try to use this chip for the ultra low power consumption feature but i got a surprise!!  My consumption is around 50mA in normal mode.

I will expect around 3 mA!!

I used the low power oscillator and i decrease my internal clock at 2,5MHz.  I use the UART , SPI and 1 timer and some digital inputs.  Nothing of special!!

Even in sleep mode,  i measured 4mA!!!! it is too high!!!

Is somebody have an idea about this??  Thx in advance for your helps :)

Hello

Please help me with flashefm8.

How to enter the serial number ? Flash Programming Utility detect "EC3005484DC" but the command

flashefm8 -sn EC3005484DC -tif c2 -part efm8ub10g16g -erase

return :

ERROR:No adapter found with serial number EC3005484DC]

I tried decimal "16230686950620" instead of "EC3005484DC" - same error.

What is wrong ?

Regards

Eugene

 

Hi everybody,

The initial configuration of  the C8051F126 is as follow:
XBR0 = 0x05; 
XBR1 = 0x14; 
XBR2 = 0x44;

The program that I want to debug uses the PCA0 also to enable some interruption.
So regarding the priority Crossbar Decode Table , this configuration is corresponding to:
P0.0 =TX0
P0.1=RX0
P0.4=TX1
P0.5=RX1
When I doing a debug to the  program to understand the functionnality of PCA0 through CEXn pin, I concentrate to the value of Bits 5-3 of the register XBR0:
I watch the value of (XBR0 & 0x38) and I see different value that I don't understand why I have these value.

So the value that I see when I do (XBR0 & 0x38) are  : 0x00, 0x08, 0x38, 0x10 , 0x18, 0x28, 0x30.
So is there any explanation to these different value ? and any explanation to the changement of value ?
Other things, is there another register that I can change to change the value of the XBR0 register ?

I thank you for your help.

Best regards,

Hello,

I would like to take follow up if silicon labs has updated the J-Link version as mentioned in this question:

https://www.silabs.com/community/mcu/8-bit/forum.topic.html/strange_error_withe-bKVe

My hardware is Sleepy bee starter kit and target part is EFM8SB10F8G-A-QFN20. Getting the same error mentioned in above question.

Would be glad if someone guides me through this.

Thanks.

I need to work with the C8051F126 processor, which is only supported by the Silabs IDE. I am looking for a complementary editor that could be integrated into the IDE that offers c language editing enhancements (like syntax constructs, brace pairing, etc.). Anything available?

We used your EFM8LB1 starter kit and your example applications in Silabs Studio to develop and test the firmware for our application, and now we are ready to test on our production board.  We use EFM8LB12F64E-C-QFP32R on our board, but the starter kit uses the QFM version of this part.  The pinouts are the same, but when we try to connect to our board with your USB Debugger, it reports that that device on the board is not correct, and disconnects.

How can we use the Configurator in Silabs Studio to reconfigure the project for our QFP part?

Hello, I am trying to enable another USART, so I have seen the articles .

(https://www.silabs.com/community/wireless/zigbee-and-thread/forum.topic.html/how_to_enable_twoua-JdPe)

(http://chihyuango.blogspot.com/2017/12/silicon-lab-zigbee-solution-efr32-two.html)

But I still failed in turing on the USART1.

I used the EVM board which is BRD4151A (EFR32MG1B232M48) and it's the same one as the second article's author.

Here is what I ever tried.

I create an event which shows me the USART.

void customUartTestFunction (void)
{
	emberEventControlSetInactive(customUartTestControl);
	emberSerialGuaranteedPrintf(COM_USART0, "USART0 status");
	emberSerialGuaranteedPrintf(COM_USART1, "USART1 status");
	emberEventControlSetDelayMS(customUartTestControl, 5000);
}

and I tried to enable the USART1 in MainIniCallback

void emberAfMainInitCallback (void)
{
	//GPIO_DbgSWDClkEnable(false);
	//GPIO_DbgSWDIOEnable(false);
	//GPIO_DbgSWOEnable(false);
	EmberStatus status = emberSerialInit(COM_USART1, BAUD_115200, PARITY_NONE, 1);

	emberSerialGuaranteedPrintf(COM_USART0, "USART0 status = 0x%x\r\n", status);
	emberSerialGuaranteedPrintf(COM_USART1, "USART1 status = 0x%x\r\n", status);
	emberEventControlSetDelayMS(customUartTestControl, 2000);

}

and in hardware config , I just set USART1 with

 TX:PC6

RX:PC7

Control flow: none

and enable the Serial output from USART1

after uploading the firmware, the USART0 works normally but USART1 doesn't print anything.

So I tried to disable USART0, I think if I can enable one of none default USART then I can enable them both.

And it wouldn't print anything , no matter what PORT i choose, PC9 PC10/ PC6 PC7 /PD11 PD12, but if I use the default TX RX port which are PA0 and PA1, then it's work.

Did I miss somthing important step?

or

Is there any possible solution you can support me?

 

BTW I used RS232 to read the message, and it can read PA0 and PA1 successfully.

We currently have a customer using a C8051F970 Capsense  module. Currently the firmware we supply to the customer allows them to control sensitivity, and thresholds to match their device and sensors.

In some cases we find we need to alter the Hardcoded Capsense gain.

#define GAIN_VALUE_ARRAY 5, 5, 5, 5, 5, 5, 5

SI_SEGMENT_VARIABLE( CSLIB_maxValues[DEF_NUMN_SENSORS], uint8_t, SI_SEG_CODE ) = { GAIN_VALUE_ARRAY }; 

At the moment this is set at start up.

Is it possible to change this at run time. If I try to change the variables in a function, the compiler returns an error indicating it is read only.

Or more precisely modifiable lvalue.

 

Hey All,

I use a wheel alignment system based on C8051F340

Under windows 7 32bit it works perfectly.

The driver does not work under windows 10 64Bit and there is an exclamation mark in the windows device manager.
I have already tried to disable the Windows driver signature. The driver can then be installed but it does not work.

What can I do? 
Where can I get the driver for 64bit?

Best Regards 

Ronny

P.S. In attach is a image from the board