Proton BASIC Community

Hi all,

I have a question about the Fos settings for a dsPic. The Datasheet says:
Max CPU Speed (MHz) 70
CPU Speed (MIPS/DMIPS) 70

Are the following PLL settings correct in this case to get the highest speed for this device? I'm struggling to get things clear at the moment:( This sets me back to the beginning...

Device = 33EP256GP502
Config FICD = ICS_PGD1, JTAGEN_ON
Config FPOR = ALTI2C1_OFF, ALTI2C2_OFF, WDTWIN_WIN25
Config FWDT = FWDTEN_ON, PLLKEN_ON, WDTPOST_PS32768, WDTPRE_PR128, WINDIS_OFF
Config Fosc = FCKSM_CSDCMD, IOL1WAY_ON, OSCIOFNC_OFF, POSCMD_HS
Config FOSCSEL = FNOSC_PRIPLL, IESO_ON
Config FGS = GCP_OFF, GWRP_OFF
Declare Xtal = 70
;-------------------------------------------------------------------------------
'Fosc = (10 * 28) / (2 * 2) = 70MHz (70 MIPS)
PLL_Setup(28,2,2,$0300)


Does anyone know a faster dspic supported by Proton and with all common features as we know them today?

Quote from: basparky on Jul 20, 2021, 08:21 PMDoes anyone know a faster dspic supported by Proton and with all common features as we know them today?

Although not a dspic the 24EP128GP202 for example is 140.03 MHz.  I can provide the fuse settings if any interest.


Personally I am looking for the settings for one of the newly supported 200 MHz pics although they are surface mount.  Say a 28 SSOP as I have a DIP adapter on hand.

Norm

The dsPIC33CK/CH family is rated at 100MHz (100MIPS)

FWIW, the datasheet limit for the 24EP128GP202 is 70MHz.

Quote from: tumbleweed on Jul 21, 2021, 12:49 AMThe dsPIC33CK/CH family is rated at 100MHz (100MIPS)

FWIW, the datasheet limit for the 24EP128GP202 is 70MHz.

Les's example code sets the Declare Xtal = 140.03 for the 24EP128GP202

QuotePositron16 Additions
Added support for devices; dsPIC33CK32MP102, dsPIC33CK32MP103, dsPIC33CK32MP105, dsPIC33CK32MP202, dsPIC33CK32MP203, dsPIC33CK32MP205, dsPIC33CK32MP206, dsPIC33CK32MP502, dsPIC33CK32MP503, dsPIC33CK32MP505, dsPIC33CK32MP506, dsPIC33CK64MP102, dsPIC33CK64MP103, dsPIC33CK64MP105, dsPIC33CK64MP202, dsPIC33CK64MP203, dsPIC33CK64MP205, dsPIC33CK64MP206, dsPIC33CK64MP208, dsPIC33CK64MP502, dsPIC33CK64MP503, dsPIC33CK64MP505, dsPIC33CK64MP506, dsPIC33CK64MP508, dsPIC33CK128MP202, dsPIC33CK256MP208, dsPIC33CK256MP502, dsPIC33CK256MP503, dsPIC33CK256MP505, dsPIC33CK256MP506, dsPIC33CK256MP508.

These are the newer dsPIC devices and offer a large set of internal peripherals and can operate up to 100 MIPS (200Mhz).

Norm

Thanks for helping.

So,yes i also noticed 70MHz for the pic24EP128GP202.Which example does declare the Xtal as 140.03?

Do i need this setting also for my dsPic?

The program below will set a dsPIC33CK device to operate at 190MHz using its internal oscillator.

It will go to 200MHz, but it is a bit unstable with the internal oscillator at that speed. However, an external crystal multiplied up allowed the 200MHz operation to be extremely stable, and I even increased its frequency from 200MHz onwards with stability using the SFRs to manipulate its PLL settings. :-)

'
'   /\\\\\\\\\
'  /\\\///////\\\
'  \/\\\     \/\\\                                                 /\\\          /\\\
'   \/\\\\\\\\\\\/        /\\\\\     /\\\\\\\\\\     /\\\\\\\\   /\\\\\\\\\\\  /\\\\\\\\\\\  /\\\\\\\\\
'    \/\\\//////\\\      /\\\///\\\  \/\\\//////    /\\\/////\\\ \////\\\////  \////\\\////  \////////\\\
'     \/\\\    \//\\\    /\\\  \//\\\ \/\\\\\\\\\\  /\\\\\\\\\\\     \/\\\         \/\\\        /\\\\\\\\\\
'      \/\\\     \//\\\  \//\\\  /\\\  \////////\\\ \//\\///////      \/\\\ /\\     \/\\\ /\\   /\\\/////\\\
'       \/\\\      \//\\\  \///\\\\\/    /\\\\\\\\\\  \//\\\\\\\\\\    \//\\\\\      \//\\\\\   \//\\\\\\\\/\\
'        \///        \///     \/////     \//////////    \//////////      \/////        \/////     \////////\//
'                                  Let's find out together what makes a PIC Tick!
'
' Setup a dsPIC33CK device to operate at 190MHz with its internal oscillator.
'
' Written by Les Johnson for the Positron16 BASIC compiler.
' https://sites.google.com/view/rosetta-tech/home
'
    Device = 33CK128MP202
    Declare Xtal = 190
'
' Setup USART1 for the HRSout command
'
    Declare Hserial1_Baud = 115200
    Declare HRSOut1_Pin = PORTB.0
'
' PPS Pin numbers
'
$define PPS_OutPin_RB0  cOut_Pin_RP32
$define PPS_OutPin_RB1  cOut_Pin_RP33
$define PPS_OutPin_RB2  cOut_Pin_RP34
$define PPS_OutPin_RB3  cOut_Pin_RP35
$define PPS_OutPin_RB4  cOut_Pin_RP36
$define PPS_OutPin_RB5  cOut_Pin_RP37
$define PPS_OutPin_RB6  cOut_Pin_RP38
$define PPS_OutPin_RB7  cOut_Pin_RP39
$define PPS_OutPin_RB8  cOut_Pin_RP40
$define PPS_OutPin_RB9  cOut_Pin_RP41
$define PPS_OutPin_RB10 cOut_Pin_RP42
$define PPS_OutPin_RB11 cOut_Pin_RP43
$define PPS_OutPin_RB12 cOut_Pin_RP44
$define PPS_OutPin_RB13 cOut_Pin_RP45
$define PPS_OutPin_RB14 cOut_Pin_RP46
$define PPS_OutPin_RB15 cOut_Pin_RP47

$define PPS_OutPin_A0 PPS_OutPin_RB0
$define PPS_OutPin_A1 PPS_OutPin_RB1
$define PPS_OutPin_A2 PPS_OutPin_RB2
$define PPS_OutPin_A3 PPS_OutPin_RB3

'----------------------------------------------------------------------------------
' The main program starts here
'
Main:
    Osc_190MHz()                                ' Set the device to run at 190MHz

    PPS_Unlock()                                ' \
    PPS_Output(PPS_OutPin_RB0, cOut_Fn_U1TX)    ' / Set the USART1 PPS pin
'
' Display text on a serial terminal
'
    Do
        HRSOutLn "Hello World"
        DelayMS 500
    Loop

'---------------------------------------------------------------------------------
' Setup the device to operate at 190MHz with its internal oscillator
' Input     : None
' Output    : None
' Notes     : Waits for the oscillator to become stable
'
Proc Osc_190MHz()
    CLKDIV = $3001          ' FRCDIV FRC/1, PLLPRE 1, DOZE 1:8
    PLLFBD = 90
    OSCTUN = $00
    PLLDIV = $21            ' POST1DIV 1:2, VCODIV FVCO/4, POST2DIV 1:1
    ACLKCON1 = $0101        ' FRCSEL FRC, APLLPRE 1:1
    APLLFBD1 = $C8
    APLLDIV1 = $42          ' APOST1DIV 1:4, APOST2DIV 1:2, AVCODIV FVCO/4

    Write_OSCCONH($01)
    Write_OSCCONL($01)

    While OSCCONbits_OSWEN <> 0 : Wend  ' Wait for the clock switch to occur
EndProc

'----------------------------------------------------------------------------------
' Set the fuses for internal oscillator
'
    Config FSEC     = BWRP_OFF, BSS_DISABLED, BSEN_OFF, GWRP_OFF, GSS_DISABLED, CWRP_OFF, CSS_DISABLED, AIVTDIS_OFF
    Config FOSCSEL  = FNOSC_FRC, IESO_OFF
    Config FOSC     = POSCMD_NONE, OSCIOFNC_ON, FCKSM_CSECMD, PLLKEN_ON, XTCFG_G0, XTBST_ENABLE
    Config FWDT     = SWDTPS_PS2147483648, RCLKSEL_LPRC
    Config FPOR     = BISTDIS_DISABLED
    Config FICD     = ICS_PGD1, JTAGEN_OFF, NOBTSWP_DISABLED
    Config FDMT     = DMTDIS_OFF
    Config FDEVOPT  = ALTI2C1_OFF, ALTI2C2_OFF, ALTI2C3_OFF, SMBEN_STANDARD, SPI2PIN_PPS
    Config FALTREG  = CTXT1_OFF, CTXT2_OFF, CTXT3_OFF, CTXT4_OFF
    Config FBOOT    = BTMODE_SINGLE


So how do I interpret this then?
The data page from the dsPIC33CK256MP508 gives:
Max CPU Speed (MHz)
100
CPU Speed (MIPS/DMIPS)
100
https://www.microchip.com/wwwproducts/en/dsPIC33CK256MP508

And you config it as 200MHz at max in the program?

Does this mean i can setup my dsPic as 140MHz at max?

  Device = 24EP128GP202    '10uf VCAP REQUIRED PIN 19 & 20
  Declare Xtal = 140.03

  Clear
' USART1 declares
  Declare Hserial_Baud = 115200           ' UART1 baud rate
  Declare Hrsout1_Pin = PORTB.3           ' Select which pin is to be used for TX with USART1
'  Declare Hrsin1_Pin = PORTB.2            ' Select which pin is to be used for RX with USART1

  Symbol cLED = PORTB.7  'use transistor
  Output cLED
  Dim yCNT As Byte

  TRISA = %00000000
  TRISB = %0000000011100000

'  PLL_Setup(43, 2, 2, $0300)              ' Configure the Oscillator to operate the device at 79.23MHz

  ' Setup the Oscillator to operate the device at 140.03MHz
  ' Fosc = (7.37 * 76) / (2 * 2) = 140.03MHz
  PLL_Setup(76, 2, 2, $0300)

  PPS_Output(cOut_Pin_RP35, cOut_Fn_U1TX)  ' Configure PPS to make Pin RB3 U1TX
  DelayMS 3000
  HSerOut[13,"START 140 MHz",13]
  While                                   ' Create an infinite loop
     Toggle cLED
     HSerOut[Dec yCNT,13]
     DelayMS 1000                        ' Create a delay
     Inc yCNT
  Wend                                    ' Do it forever

'-------------------------------------------------------------------------------

' Configure for internal 7.37MHz oscillator with PLL
' OSC pins are general purpose I/O
  Config FICD = ICS_PGD1, JTAGEN_OFF
  Config FPOR = ALTI2C1_OFF, ALTI2C2_OFF, WDTWIN_WIN75
  Config FWDT = FWDTEN_OFF, PLLKEN_ON, WDTPOST_PS512, WDTPRE_PR128, WINDIS_OFF
  Config FOSC = FCKSM_CSECME, IOL1WAY_OFF, OSCIOFNC_ON, POSCMD_NONE
  Config FOSCSEL = FNOSC_FRCPLL, IESO_OFF
  Config FGS = GCP_OFF, GWRP_OFF

  End

QuoteSo how do I interpret this then?

Interpret this as you like.
Exceeding the datasheet specs... it's all on you.

The Microchip datasheets are now notoriously bad to read and are, generally, full of copy and pastes from other device datasheets. Nothing, even nearly, as good as they once were.

I have also nothiced that some datasheets do not discern 'MIPS' from 'operating frequency' clearly enough. The PIC24 and dsPIC33 devices have an internal operating ratio of 2:1, so for every 2 cycles of the actual oscillator frequency, an instruction will be carried out. i.e. 'MIPS' Million Instructions Per Second.

The dsPIC33CK devices have a maximum 'operating' frequency of 200MHz, so their instruction cycle is 100 MIPS, usually mistaken in the datasheets as 100MHz. i.e. 200MHz / 2.

Thanks for helping!

So my dsPic does 70MIPS following the datasheet which i have to believe and for this i need to configure the PIC as 140MHz, right?
Device = 33EP256GP502
Config FICD = ICS_PGD1, JTAGEN_ON
Config FPOR = ALTI2C1_OFF, ALTI2C2_OFF, WDTWIN_WIN25
Config FWDT = FWDTEN_ON, PLLKEN_ON, WDTPOST_PS32768, WDTPRE_PR128, WINDIS_OFF
Config Fosc = FCKSM_CSDCMD, IOL1WAY_ON, OSCIOFNC_OFF, POSCMD_HS
Config FOSCSEL = FNOSC_PRIPLL, IESO_ON
Config FGS = GCP_OFF, GWRP_OFF

Declare Xtal = 140
;-------------------------------------------------------------------------------
'Fosc = (10 * 56) / (2 * 2) = (140MHz)
PLL_Setup(56,2,2,$0300)

Correct?

BTW Nice devices those dsPic33CK. when will the 256 Flash versions supported?

QuoteThe dsPIC33CK devices have a maximum 'operating' frequency of 200MHz, so their instruction cycle is 100 MIPS

My bad... I've been misinterpreting what you've been saying. Sorry about that!