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Re: Minimum hardware for programing flash on r32c/111

renesas@renesas.hosted.jivesoftware.com — Fri, 23 Jul 2010 09:43:41 GMT

Thank you!

My expectation were much lower. Can you comment please in few words why Xin and Xout are needed in programming? And doesn't E8a have some pullup internally on RESET pin? Sure I need to connect RESET to programmer 14pin socket but pullup resistor? Why AVcc in such context at all?

Minimum hardware for programing flash on r32c/111

renesas@renesas.hosted.jivesoftware.com — Thu, 22 Jul 2010 19:19:05 GMT

Hi!

I wonder, what are minimum external components on board I need to program r32c/111?

Powered from E8a, soldered 14 pin connector and r32c chip. Trying to program flash but get "Communication error".

I assume resonator is not used in this context? Something else?

I am sure answer exists somewhere in hundreds of pages of HW manual. Can someone point me to right search word in manual or some web page describing this?

Reason I am doing this is is attempt to test board for errors ASAP without soldering all components to board.

Tõnu

FFT example on IAR

renesas@renesas.hosted.jivesoftware.com — Sun, 07 Mar 2010 13:46:29 GMT

I have external requirement to use IAR instead of HEW.Now trying to make FFT examples to work on R32C112 without success.

To make it compile at all I renamed .a30 files to .asm, then changed beginning like this:

--8<------------------------------

       NAME FastFourierTransform64
       PUBLIC FastFourierTransform64
       RSEG CODE


FastFourierTransform64:

mov.l a0, a0b ; a0b = a0 = x
mov.l a1, a1b ; a1b = a1 = w

--8<------------------------------

Now what I get is error I cannot get rid of:

--8<------------------------------

Building configuration: MyIAR - Release
Updating build tree...
FastFourierTransform_r32c.asm
Error[As026]: Limit exceeded: Allowed range is 0xffffff80 - 0x7f (-128 - 127), value is 0xffffff7c (-132) C:\Documents and Settings\bill\Desktop\HW Development\minuIAR\FastFourierTransform_r32c.asm 123
Error[As026]: Limit exceeded: Allowed range is 0xffffff80 - 0x7f (-128 - 127), value is 0xffffff64 (-156) C:\Documents and Settings\bill\Desktop\HW Development\minuIAR\FastFourierTransform_r32c.asm 128
Error[As026]: Limit exceeded: Allowed range is 0xffffff80 - 0x7f (-128 - 127), value is 0xffffff4c (-180) C:\Documents and Settings\bill\Desktop\HW Development\minuIAR\FastFourierTransform_r32c.asm 133
Error while running Assembler

Total number of errors: 3
Total number of warnings: 0

--8<------------------------------

Those three errors all point to three lines:

jltu loop_*

Unsure what should I do. I think we need some doc describing this procedure (C and ASM integration, porting from HEW to IAR)? Google didn't help either. I have read documentation on http://www.iar.com/website1/1.0.1.0/165/1/ without much outcome.

Re: SPI communication on UART3 - no clock

renesas@renesas.hosted.jivesoftware.com — Thu, 25 Feb 2010 16:36:19 GMT

Spent day with guy who made hardware. We found hardware problem (short to GND), so problem is solved for now at least. Still was useful to see that code SHOULD work from previous answer too.

SPI communication on UART3 - no clock

renesas@renesas.hosted.jivesoftware.com — Wed, 24 Feb 2010 18:09:44 GMT

I am pretty new to Renesas MCUs and problem can be really simple. But spent already whole day searching for answer wihtout success, so it is time to ask.

I am trying to speak with OLED screen on 4-wire SPI connected to UART3 (p4_1 and p4_3) on R5F64112DFB (100pin pkg). Whatever I do, I do not see CLK on oscilloscope. DATA runs fine.

I think I included all relevand code here:

#include "sfr111.h"
#include "rskr32c118def.h"
#include "main_serial_spi.h"

void main(void)
{
    unsigned char ucLoopcnt;
    SPI_Master_init();

    while (1) {
            while(ti_u3c1 == 0)    {}
            u3tb = 0x55;
    }
}

// Port direction arguments
#define PDIR_INPUT (0)
#define PDIR_OUTPUT (1)

// Port for SPI clock
#define P_SPI_CLK p4_1

// Port function select registers
#define PF_SPI_CLK p4_1s
#define PF_SPI_DATA p4_3s

// Por function arguments
#define PF_SPI 3

void SPI_Master_init(void)
{
    /* CLK3    */
    pd4_1 = PDIR_OUTPUT;
    PF_SPI_CLK = PF_SPI;

    /* TXD3 */
    pd4_3 = PDIR_OUTPUT;
    PF_SPI_DATA = PF_SPI;

    smd0_u3mr    = 1; // \
    smd1_u3mr    = 0; // > Synchronous Serial More
    smd2_u3mr    = 0; // /
    ckdir_u3mr    = 0; // internal clock , 243
    stps_u3mr    = 0; // 0 required on page 258, 243
    pry_u3mr    = 0; // 0 required on page 258, 243
    prye_u3mr    = 0; // 0 required on page 258, 243
    iopol_u3mr    = 0; // 0 required on page 258, 243

    clk0_u3c0    = 0; // \ Clock source f1 for u3brg
    clk1_u3c0    = 0; // /
    // bit2 missing (page 258)
    txept_u3c0    = 0; // Transmit register empty flag (page ?)
    crd_u3c0    = 1; // CTS disabled when 1(page 245)
    nch_u3c0    = 0; // Output mode "push-pull" for TXD and CLOCK pin (page 245)
    ckpol_u3c0    = 0; // Polarity (page?)
    uform_u3c0    = 1; // MSB first (page 245)

    te_u3c1        = 1; // Transmission enabled (page 258, 247)
    ti_u3c1        = 0; // Must be 0 to send or receive
    re_u3c1        = 0; // Reception is disabled when 0 (page 247)
    ri_u3c1        = 0; // Receive complete flag - U3RB is empty. (page 247)
    u3irs_u3c1    = 0; // 1 when transmission is completed, U3TB is empty. (page 247)
    u3rrm_u3c1    = 0; // Continuous receive mode off
    u3lch_u3c1    = 0; // Logical inversion off (page 258)
    // bit 7 missing (page 258)

u3smr = 0x00; // Set 0 (page 258)
u3smr2 = 0x00; // Set 0 (page 258)

    sse_u3smr3    = 0; // SS is disabled when 0 (page 251)
    ckph_u3smr3    = 0; // Non clock delayed (page 251)
    dinc_u3smr3    = 0; // Master mode when 0 (page 251)
    nodc_u3smr3    = 0; // Select a clock output mode "push-pull" when 0 (page 258, 251)
    err_u3smr3    = 0; // Error flag, no error when 0 (page 251)
    dl0_u3smr3    = 0; // Set 0 for no delay (page 251)
    dl1_u3smr3    = 0; // Set 0 for no delay (page 251)
    dl2_u3smr3    = 0; // Set 0 for no delay (page 251)

    u3smr4 = 0x00; // Set 0 (page 258)

    // u3c0 must be set before this function
    u3brg = (unsigned char)(((f1_CLK_SPEED)/(2*BIT_RATE))-1);

    DISABLE_IRQ;
    s3tic = 0b00000011;
    ENABLE_IRQ;
}

#pragma interrupt _uart3_trans(vect=35)
void _uart3_trans(void)
{
ir_s3tic = 0;
}