Posted on May 17, 2011 at 13:07Hi guys,
I have a problem with the SPI1-Interface. I use the Code below. When I replace the SPI1's with SPI2's in the code the SPI2-Interface runs. But the SPI1-Interface don't like it. I don't know why the Interface stops in the line:
while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET);I use a STM32F103RBT6 µC (128kB Flash & 20kB Ram), with the IAR ARM v.5.11, currently the Kickstart Version with the EWARM libraries.
1.) Are there differences between SPI2 and SPI1 Interface to setup ?
2.) Does anyone see a failure in my Interface setup ?
3.) Can someone give me a running code for the SPI1 ?
4.) Thx all for reading and I hope for helping me !
Code:
<BR>SPI_InitTypeDef SPI_struct; <BR> <BR> //deInit <BR> SPI_I2S_DeInit(SPI1); <BR> //GPIO_PinRemapConfig(GPIO_Remap_SPI1,DISABLE); <BR> <BR> /*Initialize Pins*/ <BR> //SS Pin <BR> GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; <BR> GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; <BR> GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; <BR> GPIO_Init(GPIOA, &GPIO_InitStructure); <BR> <BR> //CD Pin <BR> GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; <BR> GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; <BR> GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; <BR> GPIO_Init(GPIOA, &GPIO_InitStructure); <BR> <BR> //WP Pin <BR> GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; <BR> GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; <BR> GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; <BR> GPIO_Init(GPIOC, &GPIO_InitStructure); <BR> <BR> //SCK / MISO / MOSI Pins <BR> GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; <BR> GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; <BR> GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 |GPIO_Pin_7; <BR> GPIO_Init(GPIOA, &GPIO_InitStructure); <BR> <BR> /* Enable GPIOA clock */ <BR> RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC , ENABLE); <BR> <BR> /* SPI1 Periph clock enable */ <BR> RCC_APB1PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE); <BR> <BR> <BR>//SPI_struct. <BR> SPI_struct.SPI_Direction = SPI_Direction_2Lines_FullDuplex; <BR> SPI_struct.SPI_Mode = SPI_Mode_Master; <BR> SPI_struct.SPI_DataSize = SPI_DataSize_8b; <BR> SPI_struct.SPI_CPOL = SPI_CPOL_Low; <BR> SPI_struct.SPI_CPHA = SPI_CPHA_1Edge; <BR> SPI_struct.SPI_NSS = SPI_NSS_Soft; <BR> SPI_struct.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256; <BR> SPI_struct.SPI_FirstBit = SPI_FirstBit_MSB; <BR> SPI_struct.SPI_CRCPolynomial = 7; <BR> <BR> //SPI init <BR> SPI_Init(SPI1, &SPI_struct); <BR> <BR> //Enable SPI <BR> SPI_Cmd(SPI1 , ENABLE); <BR>
Code:
<BR>//function to send a byte <BR>u8 MmcTransferByte (SPI_TypeDef* SPIx , u8 ch) <BR>{ <BR> SPI_I2S_SendData(SPIx, ch); <BR> while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET); //in this line the µC never come back ! <BR> return 0; <BR>} <BR>
[ This message was edited by: fabseostner100 on 25-03-2009 11:04 ]
