Hi,
I'm trying to get SPI_B on the NUCLEO-H7A3ZI-Q to work with low level drivers. But I have no output:
This is my code:
LL_AHB4_GRP1_EnableClock(LL_AHB4_GRP1_PERIPH_GPIOA);
LL_AHB4_GRP1_EnableClock(LL_AHB4_GRP1_PERIPH_GPIOB);
/* SPI1 /CS */
GPIO_InitStruct.Pin = LL_GPIO_PIN_4;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = LL_GPIO_AF_5;
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* SPI1 SCK GPIO pin configuration*/
GPIO_InitStruct.Pin = LL_GPIO_PIN_3;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Pull = LL_GPIO_PULL_DOWN;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = LL_GPIO_AF_5;
LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* SPI1 MISO GPIO pin configuration*/
GPIO_InitStruct.Pin = LL_GPIO_PIN_4;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = LL_GPIO_AF_5;
LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* SPI1 MOSI GPIO pin configuration*/
GPIO_InitStruct.Pin = LL_GPIO_PIN_5;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = LL_GPIO_AF_5;
LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
LL_SPI_InitTypeDef SPI_InitStruct;
/* Configure SPI MASTER ****************************************************/
/* Enable SPI1 Clock */
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SPI1);
/* Configure the SPI1 parameters */
SPI_InitStruct.BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV256;
SPI_InitStruct.TransferDirection = LL_SPI_FULL_DUPLEX;
SPI_InitStruct.ClockPhase = LL_SPI_PHASE_2EDGE;
SPI_InitStruct.ClockPolarity = LL_SPI_POLARITY_LOW;
SPI_InitStruct.BitOrder = LL_SPI_MSB_FIRST;
SPI_InitStruct.DataWidth = LL_SPI_DATAWIDTH_8BIT;
SPI_InitStruct.NSS = LL_SPI_NSS_HARD_OUTPUT;
SPI_InitStruct.CRCCalculation = LL_SPI_CRCCALCULATION_DISABLE;
SPI_InitStruct.Mode = LL_SPI_MODE_MASTER;
LL_SPI_Init(SPI1, &SPI_InitStruct);
/* Lock GPIO for master to avoid glitches on the clock output */
LL_SPI_EnableGPIOControl(SPI1);
LL_SPI_EnableMasterRxAutoSuspend(SPI1);
/* Set number of date to transmit */
//LL_SPI_SetTransferSize(SPI1, 1);
/* Enable SPI1 */
LL_SPI_Enable(SPI1);
while (1)
{
LL_SPI_TransmitData8(SPI1, 0x5A);
while (LL_SPI_IsActiveFlag_RXP(SPI1) == 0);
}
Sugestions what is wrong?
Thanks!.
