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spi
Vitis Drivers API Documentation
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This file contains a design example using the Spi driver (XSpi) and the Spi device using the polled mode.
To put the driver in polled mode the Global Interrupt must be disabled after the Spi is Initialized and Spi driver is started.
This example works with a PPC/MicroBlaze processor.
None.
MODIFICATION HISTORY:
Ver Who Date Changes
1.00a sdm 03/03/08 First Release 3.00a ktn 10/28/09 Converted all register accesses to 32 bit access. Updated to use the HAL APIs/macros. Replaced call to XSpi_Initialize API with XSpi_LookupConfig and XSpi_CfgInitialize. 3.02a sdm 05/04/11 Updated to run the loopback test only in standard spi mode. 4.2 ms 01/23/17 Added xil_printf statement in main function to ensure that "Successfully ran" and "Failed" strings are available in all examples. This is a fix for CR-965028. 4.11 sb 07/11/23 Added support for system device-tree flow. *
Functions | |
int | SpiPolledExample (XSpi *SpiInstancePtr, u16 SpiDeviceId) |
This function does a minimal test on the Spi device and driver as a design example. More... | |
int | main (void) |
Main function to call the Spi Polled example. More... | |
int main | ( | void | ) |
Main function to call the Spi Polled example.
References SpiPolledExample().
int SpiPolledExample | ( | XSpi * | SpiInstancePtr, |
u16 | SpiDeviceId | ||
) |
This function does a minimal test on the Spi device and driver as a design example.
The purpose of this function is to illustrate how to use the XSpi component using the polled mode.
This function sends data and expects to receive the same data.
SpiInstancePtr | is a pointer to the instance of Spi component. |
SpiDeviceId | is the Device ID of the Spi Device and is the XPAR_<SPI_instance>_DEVICE_ID value from xparameters.h. |
This function contains an infinite loop such that if the Spi device is not working it may never return.
References XSpi_Config::BaseAddress, XSpi::SpiMode, XSP_MASTER_OPTION, XSpi_CfgInitialize(), XSpi_IntrGlobalDisable, XSpi_LookupConfig(), XSpi_SelfTest(), XSpi_SetOptions(), XSpi_Start(), and XSpi_Transfer().
Referenced by main().