I'm working on EFM8BB3 SLSTK2022A starter kit, when crossbar SPI communication pins to first 4 pins of port 0 it doesn't work. but when skipped p0.0 it works fine. Is there any issues regarding P0.0 pin for SPI clock assignment ?

Hi!

Is there a way to clear receive buffer SBUF0?

I know what I can detect char receive by interrupts but I need exactly receive buffer clear.

I have following code:

/*
 * dsp.h
 *
 *      Author: User
 */

#ifndef __DSP_H__
#define __DSP_H__

#define MIN(a,b) (a<b?a:b)
#define MAX(a,b) (a>b?a:b)

uint16_t GetMvFromCode(uint16_t codeValue, uint16_t vref, uint16_t adcMaxCode);
uint16_t GetCodeFromMv(uint16_t mv, uint16_t vref, uint16_t adcMaxCode);
void GetMinMaxAvg(uint16_t * buffer, uint16_t len, uint16_t * min, uint16_t * max, uint16_t * average);
void GetAverageDeviation(uint16_t * buffer, uint16_t len, uint16_t average, uint16_t * averageDeviation);
void CalcMovingAverage(uint16_t * signal, uint16_t len, uint16_t * ma, uint8_t period);
uint16_t GetDeviation(uint16_t a, uint16_t b);


#endif /* __DSP_H__ */

And I always have following error:

dsp.h: missing ';' before 'GetMvFromCode'

If I comment the first prototype I have same error for the next prototype.

What does compiler mean and want from me?

Maybe a beginner problem where someone can help me. 

Is it possible to let a codepart/some functions oder datafields start at a given address in codememory

without fiddling around with SILABS_STARTUP.A51 or with some deeply hidden SStudio-Config ?

Studying the complex bootloader-examples did not help me either.

Maybe theres a simple .c-pragma out there to do that ? Or a good link to some how-to-do docs ?

// ----------------------------------------------------------------------------
// Locate this function at 0x1000, the other (small enough) Code starts at normal 0x0000
// ----------------------------------------------------------------------------
bool farawayfunc(uint16_t a, uint8_t b)
{
  if (a >b)
  {
    return true;
  }
  else
  {
    return false;
  }
} 

 

Hi, everyone

 i want to know  where the  number 256 comes from, and  T1H should be  256 - T1clk/(UartBaudRate)/2 .

//-----------------------------------------------------------------------------
// UART0_Init
//-----------------------------------------------------------------------------
//
// Return Value : None
// Parameters   : None
//
// Configure the UART0 using Timer1, for <BAUDRATE> and 8-N-1.
//-----------------------------------------------------------------------------

void UART0_Init (void)
{
   SCON0 = 0x10;                       // SCON0: 8-bit variable bit rate
                                       //        level of STOP bit is ignored
                                       //        RX enabled
                                       //        ninth bits are zeros
                                       //        clear RI0 and TI0 bits
   if (SYSCLK/BAUDRATE/2/256 < 1) {
      TH1 = -(SYSCLK/BAUDRATE/2);
      CKCON &= ~0x0B;                  // T1M = 1; SCA1:0 = xx
      CKCON |=  0x08;
   } else if (SYSCLK/BAUDRATE/2/256 < 4) {
      TH1 = -(SYSCLK/BAUDRATE/2/4);
      CKCON &= ~0x0B;                  // T1M = 0; SCA1:0 = 01                  
      CKCON |=  0x01;
   } else if (SYSCLK/BAUDRATE/2/256 < 12) {
      TH1 = -(SYSCLK/BAUDRATE/2/12);
      CKCON &= ~0x0B;                  // T1M = 0; SCA1:0 = 00
   } else {
      TH1 = -(SYSCLK/BAUDRATE/2/48);
      CKCON &= ~0x0B;                  // T1M = 0; SCA1:0 = 10
      CKCON |=  0x02;
   }

   TL1 = TH1;                          // Init Timer1
   TMOD &= ~0xf0;                      // TMOD: timer 1 in 8-bit autoreload
   TMOD |=  0x20;                       
   TR1 = 1;                            // START Timer1
   TI0 = 1;                            // Indicate TX0 ready
}

 

With EFM8UB2, I want to use Frequency Mode with output on Cex1. The data sheet says to set MAT1 to 0 to avoid CCF1 being set by a 16 bit match, but it is unclear whether CCF1 would be set by toggling Cex1 when MAT1 is 0. Can you confirm if CCF1 would be set in Frequency mode if MAT1 = 0?

I found the following.

Source: https://fishpepper.de/2016/10/15/efm8-bootloader-flash-tool-efm8load-py/

In order to program the EFM8BB10 CPU I am using on my ESC project, i wrote this small python utility that talks to the efm8 bootloader. You can find it at my github repo: https://github.com/fishpepper/efm8load.

This small python code snippet allows you to:

• identify the chip
• upload and verify any firmware in hex fileformat
• download (!) the content of the efm8 flash

The downloading feature is something special, the bootloader does not allow downloading of flash contents. However it allows to verify the flash by using a crc16 checksum over a given region. This can be exploited to read back the flash by issuing many many verify operations. Due to this the whole operation takes a long time. But it works

Does someone tried it ?

Is that so easy to dump efm8 flash ?

I know, this question was answered already in this forum - but not for me.

The software was sent directly to the one who asked the question first, but no link to download is available.

That's why I have to ask the same question again (as I'm not shure my "answer" in the original topic will be read).

I purchased the kit from RS Components. The promised CD-ROM was not included, so I asked the RS-Service team.
They could not help me, but I really want use the kit in the desired way.

Could you please send me the AN204SW, please?

Thank you very much.

 

Hello everyone!

Now I'm working with EFM8LB1 starter kit.

I have an issue with (obviously I think) with address space overflow:

** ERROR L107: ADDRESS SPACE OVERFLOW
    SPACE:   XDATA
    SEGMENT: ?XD?EFM8LB1_ADC_LIB_AUTOSCAN_LARGE_BUFFER
    LENGTH:  001000H   

Program Size: data=44.3 xdata=6144 const=0 code=6456

But some moments don't obviously for me. I  will start from scratch.

1. Initial state

By default buffer size has a value equal to 2048 elements (4096 bytes). As I understood the buffer takes all XDATA size.

//-----------------------------------------------------------------------------
// Autoscan buffer initialization
//-----------------------------------------------------------------------------
#define BUFFER_SIZE (2048)      // The size, in samples, of the autoscan
                                // buffer BUFFER

#define SAMPLES_PER_SCAN (64)
// The starting address of autoscan buffer BUFFER in XDATA space.
// MUST END ON AN EVEN ADDRESS!
#define BUFFER_START_ADDR (0x0000)
ADC0_NEW_AUTOSCAN_BUFFER_ARRAY(BUFFER, BUFFER_SIZE, BUFFER_START_ADDR);

uint16_t dataMaxValue = 0;
uint16_t dataMinValue = 0;
uint16_t dataAvgValue = 0;
//uint16_t xdata movingAverage4[BUFFER_SIZE] = {0};
//uint16_t xdata movingAverage8[BUFFER_SIZE] = {0};

I have following compiler output:

Program Size: data=44.3 xdata=4096 const=0 code=2352
LX51 RUN COMPLETE.  0 WARNING(S),  0 ERROR(S)
Finished building target: EFM8LB1_ADC_Lib_Autoscan_Large_Buffer.omf

Ok, it's good.

2. Try to define other variables in XDATA section - no success

I add declaration for movingAverage4[BUFFER_SIZE] = {0}; and get following code:

//-----------------------------------------------------------------------------
// Autoscan buffer initialization
//-----------------------------------------------------------------------------
#define BUFFER_SIZE (2048)      // The size, in samples, of the autoscan
                                // buffer BUFFER

#define SAMPLES_PER_SCAN (64)
// The starting address of autoscan buffer BUFFER in XDATA space.
// MUST END ON AN EVEN ADDRESS!
#define BUFFER_START_ADDR (0x0000)
ADC0_NEW_AUTOSCAN_BUFFER_ARRAY(BUFFER, BUFFER_SIZE, BUFFER_START_ADDR);

uint16_t dataMaxValue = 0;
uint16_t dataMinValue = 0;
uint16_t dataAvgValue = 0;
uint16_t xdata movingAverage4[BUFFER_SIZE] = {0};
//uint16_t xdata movingAverage8[BUFFER_SIZE] = {0};

I should have an address space overflow and I get it:

*** ERROR L107: ADDRESS SPACE OVERFLOW
    SPACE:   XDATA
    SEGMENT: ?XD?EFM8LB1_ADC_LIB_AUTOSCAN_LARGE_BUFFER
    LENGTH:  001000H   

Program Size: data=44.3 xdata=8192 const=0 code=6452
LX51 RUN COMPLETE.  0 WARNING(S),  1 ERROR(S)
make: *** [EFM8LB1_ADC_Lib_Autoscan_Large_Buffer.omf] Error 1

3. Remove additional declaration and increase the buffer size - a tricky moment

I remove any additional declaration in XCODE area and double buffer size:

//-----------------------------------------------------------------------------
// Autoscan buffer initialization
//-----------------------------------------------------------------------------
#define BUFFER_SIZE (4096)      // The size, in samples, of the autoscan
                                // buffer BUFFER

#define SAMPLES_PER_SCAN (64)
// The starting address of autoscan buffer BUFFER in XDATA space.
// MUST END ON AN EVEN ADDRESS!
#define BUFFER_START_ADDR (0x0000)
ADC0_NEW_AUTOSCAN_BUFFER_ARRAY(BUFFER, BUFFER_SIZE, BUFFER_START_ADDR);

uint16_t dataMaxValue = 0;
uint16_t dataMinValue = 0;
uint16_t dataAvgValue = 0;
//uint16_t xdata movingAverage4[BUFFER_SIZE] = {0};
//uint16_t xdata movingAverage8[BUFFER_SIZE] = {0};

After this, I compile the code and it compiles without errors:

Program Size: data=44.3 xdata=8192 const=0 code=2352
LX51 RUN COMPLETE.  0 WARNING(S),  0 ERROR(S)
Finished building target: EFM8LB1_ADC_Lib_Autoscan_Large_Buffer.omf

00:40:37 Build Finished (took 2s.49ms)

EFM8LB1_ADC_Lib_Autoscan_Large_Buffer PROBLEM COUNT: 0 WARNING(S), 0 ERROR(S) 

So my question - why I get no errors from the compiler when I set buffer size greater than XDATA size?

 

P.S. The max buffer size which I can set is 32767. After this value I get an error:

*** ERROR C147 IN LINE 102 OF C:\workspace\simplicity_v4\EFM8LB1_ADC_Lib_Autoscan_Large_Buffer\src\EFM8LB1_ADC_Lib_Autoscan_Large_Buffer.c: 'declaration': object too large

C51 COMPILATION COMPLETE.  0 WARNING(S),  1 ERROR(S)
make: *** [src/EFM8LB1_ADC_Lib_Autoscan_Large_Buffer.OBJ] Error 1

00:47:50 Build Finished (took 1s.519ms)

EFM8LB1_ADC_Lib_Autoscan_Large_Buffer PROBLEM COUNT: 0 WARNING(S), 2 ERROR(S) 

 

Got a left-over UDA. There is no model sticker on the outside. Don't know if it is 8-bit or 32-bit. Any suggestion?

Hi all,

I'm trying to access the low-frequency oscillator in a BB2 to reduce power drain for one of my current projects.  My code is as follows:

/**
 * \brief Switch to the Low-Frequency Oscillator
 *
 * This runs at 80kHz (approx).
 * This function will block until the oscillator is stable and running
 * before switching over.
 */
void SwitchToLFOSC(void)
{
    /* First, switch on the oscillator, with the divide by 1 option (80kHz) */
    LFO0CN |= (LFO0CN_OSCLEN__ENABLED | LFO0CN_OSCLD__DIVIDE_BY_1);

    /* Flag that it's on */
    sClockVars.lfOscOn = 1;

    /* Wait for the ready bit */
    while ((LFO0CN & LFO0CN_OSCLRDY__SET) == 0)
    {
        /* Do nothing */
    }

    /* Change to the LF clock */
    CLKSEL = CLKSEL_CLKSL__LFOSC | CLKSEL_CLKDIV__SYSCLK_DIV_1;

    /* Flag that it's selected */
    sClockVars.lfOscSelected = 1;

    /* Turn off the HF oscillator */
    HFOCN = 0;
}   /* SwitchToLFOSC */

Unfortunately, it's blocking forever until the watchdog fires.  The debugger says LFO0CN contains the value 0xE3, but for some reason it's reading back the code as 0.  That loop compiles to the following assembly:

0009         ?C0002:
                                           ; SOURCE LINE # 81
0009 E5B1              MOV     A,LFO0CN
000B 30E6FB            JNB     ACC.6,?C0002

Stepping through in assembly mode, I see A always being read as 0.

I then tried introducing a local variable:

    volatile uint8_t lfo0cn_copy = 0;

    /* First, switch on the oscillator, with the divide by 1 option (80kHz) */
    LFO0CN |= (LFO0CN_OSCLEN__ENABLED | LFO0CN_OSCLD__DIVIDE_BY_1);

    /* Flag that it's on */
    sClockVars.lfOscOn = 1;

    /* Wait for the ready bit */
    do {
        lfo0cn_copy = LFO0CN;
    } while ((lfo0cn_copy & LFO0CN_OSCLRDY__SET) == 0);

The loop now compiles to the following assembly:

000C         ?C0004:
                                           ; SOURCE LINE # 90
                                           ; SOURCE LINE # 91
000C 85B100      R     MOV     lfo0cn_copy,LFO0CN
                                           ; SOURCE LINE # 92
000F E500        R     MOV     A,lfo0cn_copy
0011 30E6F8            JNB     ACC.6,?C0004

Unfortunately, lfo0cn_copy stays obstinately at 0.

Any ideas?

Regards,

Geoff

Hi,

Two more, I need I2c Port.

so I am using gpio port for i2c. 

If I configure "not skip" the port, Can I use Any port as the I2C port?

And, If It it possible, give me an example (gpio for I2C).

Thank you.

Ah.. My EFM8LB1 Start-Kit (Rev 3)

Hi,

We are using C8051F340 Microcontroller to configure Raycom IC RC7235A2.The code is written in ASM lang and successfully downloaded also.Once JTAG is DISCONNECTed the configuration is not happening completely.If JTAG connector is connected using CONNECT option in SILABS IDE the code will be executed and config happens completely.

Reset signal is checked and found fine.I have attached the schematics of Microcontroller part.

Need some help in resolving this issue.

Warm regards,

Manju

 

Howdy!,

 

Wondering what "baud" rate can I run a CDC data stream from a USB efm8 part, the idea is to stream a 12-bit data value as quickly as feasible. I know the SiLabs CP2102 dedicated silicon parts are fast, (3mb/sec ?) and was wondering about the EFM8UB20F64G-A-QFP48 or related.

Thanks!

 

I am trying to use the legacy SiLabs IDE that has been present on my computer for years and used to work extremely well for a new project. This is the first time I've tried to use it since Windows 10 was installed over the previous Windows 7. The IDE works great to edit and compile the software but when it comes to try to connect to the USB Debug Adapter it keeps giving an error "Unable to connect".

When I use the Flash Utility it can see the EC3 adapter with no problem. However when I attempt to perform any operation that involves connecting to the MCU it always gives the "Unable to connect" error after some delay. I have tried this on several different SiLabs target boards (older ones to be sure) and have the same result. I've also tried three different EC3 adapters and all have the same problem.

Lastly I installed Simplicty Ver 4 and imported my legacy project to that environment and am able to build the code just fine. However when I try to configure the debug connection it fails in the same way indicating that it is unable to connect.

The disappointing thing is that I know this used to work just fine with these same hardware pieces in the past.

What can I do to get the working under Win 10?

Michael Karas