请教pxa270+WIFI8686!!!

wxwy

请教pxa270+WIFI8686!!! [复制链接]

用的PXA270和USI的无线网卡 8686芯片组
接口用的SPI

通过打印信息看总是在读取芯片ID时候出错：
Chip(exp, val)= (000bh), ffffh) //期望是000B ，实际FFFF
pxa_gspi_Init is fault !!!!!!!!!!!!!
If_Initialize is fault !!!!!!!!!!!!!xxxxxxxxxxxxxxx

看代码发现似乎是SPI初始化问题：
ssp_init_hw(pHC);
intr_init(pHC);
dma_init(pHC); //没有用到DMA
         ......
      #if defined (GSPI8385)
const WORD chipid = 0x0004;
       #elif defined (GSPI8686)
const WORD chipid = 0x000b;
      #else
const WORD chipid = 0x000;
      #endif
        ssp_read_register((DWORD)pHC, ®val, 0x02);   //在这读寄存器，读出的值regval出错
      if (chipid != regval)
{
GSPIMSG(1, (TEXT("Chip(exp, val)= (%04xh), %04xh)\n"), chipid, regval));
                        //上面的信息在这里打印出来
           pxa_gspi_Deinit((DWORD)pHC);
pHC = NULL;
goto funcFinal;
}
   其中pxa_gspi_Init函数中对SPI的引脚做了初始化：我用的引脚是
#define SSP_SCLK 23
#define SSP_SFRM 24
#define SSP_TX 25
#define SSP_RX 26
#define SSP_INTR 22
ssp_init_hw函数中对其初始化：
      pHC->pGPIORegs->GPDR0 |= ((0x1U << 23) | (0x1U << 24) | (0x1U << 25));
pHC->pGPIORegs->GPDR0 &= ~(0x1U << 26);
//Set gpio24 to high
pHC->pGPIORegs->GPSR0 |= (0x1U << 24);  // 输出1
//Set the gpio 23 as function 2 sspsclk
//25 as function 2                ssptxd
//26 as function 1                ssprxd
pHC->pGPIORegs->GAFR0_U &= 0xFFC03FFF;
pHC->pGPIORegs->GAFR0_U |= ((0x2U << 14) | (0x0U << 16) | (0x2U << 18) | (0x1U << 20));
//wx_end change
pHC->pSSPRegs->base.sscr0 = 0;
pHC->pSSPRegs->base.sscr1 = 0;

// Sleep(0);       //JKU
/// Configure the SSP CLK
#if (SSPCTRLER == 1) ///Using SSP controller1
pHC->pCLKRegs->cken |= (1<<23);
#elif (SSPCTRLER == 2) ///Using SSP controller2
pHC->pCLKRegs->cken |= (1<<3);
#elif (SSPCTRLER == 3) ///Using SSP controller3
pHC->pCLKRegs->cken |= (1<<4);
#endif ///SSPCTRLER

pHC->pSSPRegs->base.sscr0 = SSCR0_SCR(clkdiv) | SSCR0_DSS(0x000f) | SSCR0_FRF(3);
pHC->pSSPRegs->base.sscr1 = SSCR1_TTELP | SSCR1_TTE | SSCR1_TSRE | SSCR1_RSRE |
SSCR1_RFT(0x1) | SSCR1_TFT(0x1) | SSCR1_TRAIL;

pHC->pSSPRegs->sspsp = SSPSP_SCMODE(0);
pHC->pSSPRegs->ssto = 1;
pHC->pSSPRegs->base.sscr0 |= SSCR0_SSE;

set_GPIO_signal(pHC->pGPIORegs, SSP_RST, SIG_UP);
udelay(pHC->pOSTRegs, 500);
set_GPIO_signal(pHC->pGPIORegs, SSP_RST, SIG_DOWN);  //JKU: pin 11 to reset
udelay(pHC->pOSTRegs, 5000);
set_GPIO_signal(pHC->pGPIORegs, SSP_RST, SIG_UP);
udelay(pHC->pOSTRegs, 500);

请教：现在的现象大概是哪里出了错误？是否是SPI初始化的问题！！！

liujianak

spi读取错误，用spi读的时候多读几个字节数据出来，可能冗余数据的原因。
比如一个寄存器的值是0xabcd，用spi读出来可能是0xff 0xff 0xcd 0xab，前两个字节冗余

jgalz

关注WIFI

zwbs007

周末不想看CODE ！支持一下

xuxiumei1987

引用 1 楼 csdeny 的回复:
spi读取错误，用spi读的时候多读几个字节数据出来，可能冗余数据的原因。
比如一个寄存器的值是0xabcd，用spi读出来可能是0xff 0xff 0xcd 0xab，前两个字节冗余

貌似不是这个问题！

GAOYUYOU

请问：
我对GPIO  22~26进行如下初始化，是否正确
#define SSP_SCLK 23
#define SSP_SFRM 24
#define SSP_TX 25
#define SSP_RX 26
#define SSP_INTR 22
      //Set the gpio 23,24,25 as output
//Set the gpio 26 as input
pHC->pGPIORegs->GPDR0 |= ((0x1U << 23) | (0x1U << 24) | (0x1U << 25));
pHC->pGPIORegs->GPDR0 &= ~(0x1U << 26);
      pHC->pGPIORegs->GAFR0_U |= ((0x2U << 14) |
                                 (0x2U << 16)  |
                                 (0x2U << 18)  |
                                 (0x1U << 20));
pHC->pSSPRegs->base.sscr0 = 0;
pHC->pSSPRegs->base.sscr1 = 0;

saioooooo

ding !

taoym101

关注，顶一下。

tule2006

我再顶！

liouyi

高手们...

ggyggu

请问：
  我对GPIO  22~26进行如下初始化，是否正确
#define SSP_SCLK 23
#define SSP_SFRM 24
#define SSP_TX 25
#define SSP_RX 26
#define SSP_INTR 22
      //Set the gpio 23,24,25 as output
//Set the gpio 26 as input
pHC->pGPIORegs->GPDR0 |= ((0x1U < < 23) | (0x1U < < 24) | (0x1U < < 25));
pHC->pGPIORegs->GPDR0 &= ~(0x1U < < 26);
      pHC->pGPIORegs->GAFR0_U |= ((0x2U < < 14) |
                              (0x2U < < 16)  |
                              (0x2U < < 18)  |
                              (0x1U < < 20));
pHC->pSSPRegs->base.sscr0 = 0;
pHC->pSSPRegs->base.sscr1 = 0;

hwh

ding!!!!!!!!!!!!

bfan

以解决

wq88143990

恭喜

Paul, Chao @ Techware

net6634219

ding ding ding ding

请教pxa270+WIFI8686!!! [复制链接]

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