Posted on June 19, 2018 at 05:23Hello. I want ask something that drive to me mad.
Using STM32F769NIH for control external ADC(AD7192) with SPI interface
SPI6 for SPI communication(PG13 -> SCK, PA6 -> MISO, PG14 -> MOSI)
nChip Select controlled by PI13
clock enable to all use(PORT A, G, I) and SPI6 also
setting to SPI6 and initialize it
but I can't get the clock signal from PG13(SPI6_SCK)
how can i get the clock signal? what is wrong?
p.s i check PIN and AF from ref. if i mistake it, plz tell me
//////////////////////////////////////////////////////code/////////////////////////////////////////////////////////
GPIO_InitTypeDef GPIO_InitStruct;
SPI_HandleTypeDef hspi;
__HAL_RCC_GPIOI_CLK_ENABLE(); //nCS PIN
GPIO_InitStruct.Pin = GPIO_PIN_13;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
__HAL_RCC_SPI6_CLK_ENABLE(); //spi gpio
__HAL_RCC_GPIOG_CLK_ENABLE(); // PG13 ------> SPI6_SCK
GPIO_InitStruct.Pin = GPIO_PIN_13;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI6;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
__HAL_RCC_GPIOA_CLK_ENABLE(); // PA6 ------> SPI6_MISO
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF8_SPI6;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
__HAL_RCC_GPIOG_CLK_ENABLE(); // PG14 ------> SPI6_MOSI
GPIO_InitStruct.Pin = GPIO_PIN_14;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI6;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
hspi.Instance = SPI6;
hspi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
hspi.Init.Direction = SPI_DIRECTION_2LINES;
hspi.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi.Init.DataSize = SPI_DATASIZE_8BIT;
hspi.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi.Init.TIMode = SPI_TIMODE_DISABLE;
hspi.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi.Init.CRCPolynomial = 7;
hspi.Init.NSS = SPI_NSS_SOFT;
// hspi.Init.NSSPMODE = SPI_NSS_PULSE_DISABLE;
hspi.Init.Mode = SPI_MODE_MASTER;
if(HAL_OK != HAL_SPI_Init(&hspi))
{
printf('INIT_ERROR');
}
while(1)
{
}
/////////////////////////////////////////////end/////////////////////////////////
