SPI to LCD FT800 not working well

[rifqi]

Posted on October 26, 2015 at 04:42

First i use Mode for SCK and MOSI was AF_PP but we read a strange value 0x42. and i Change it to AF_OD and it shows another value, that was 0xFE. and still not find the ready value of FT800 display. that should show 0x7c. I use STM32F103ZG. 

Here is my Code:void SpiConfig(void){    GPIO_InitTypeDef GPIO_InitStructure;    SPI_InitTypeDef SPI_InitStructure;        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);    GPIO_InitStructure.GPIO_Pin = SPI1_SCK | SPI1_MOSI;    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;    GPIO_Init(GPIOA, &GPIO_InitStructure);        GPIO_InitStructure.GPIO_Pin = SPI1_MISO;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;    GPIO_Init(GPIOA, &GPIO_InitStructure);        GPIO_InitStructure.GPIO_Pin = SPI1_PD | SPI1_CS;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;    GPIO_Init(GPIOB, &GPIO_InitStructure);        RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);//     RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);        SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;    SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;    SPI_InitStructure.SPI_CRCPolynomial = 7;    SPI_Init(SPI1, &SPI_InitStructure);        SPI_Cmd(SPI1, ENABLE);}Please Help me.. thanks #spi

[Tesla DeLorean]

Posted on October 26, 2015 at 16:02

F1 coding tends to have MISO tagged as an Input, as I recall.

Double check your clock phase settings are correct.

[rifqi]

Posted on November 19, 2015 at 04:35

Thanks Clive1 I got the answer. I just add this code, 

while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_BSY) == SET);

on the SPI Transmit function. May be on the slave didnt receive last bit data.But Now I have a new problem on receive data on the master. We Always lost last bit data I have tried to add ''waiting busy flag'' before chip select gone high. I use Mode 0 SPI type. Could you suggest me how to troubleshoot this kind of problem? Where Should I start check? Thanks Very Much.