Part Number: DRA72
Tool/software: TI-RTOS
Do you have an example for SPI for use in TI-RTOS? I saw and example on the UART. I run Linux on the Cortex A15 and the CAN drivers on the IPU1 M4. I need to run all 5 CAN ports on that M4 core.
Another programmer wrote support for 3 external CAN with MCP25625 devices from Microchip. Since he could not get the SPI port to work he used bit banging.
The MCP25625 device is the device MCP2515 with the output driver.
Only the first device works so I was given the task to fix this. I want to modify it to use the SPI. All 2 are on mcspi1 and use the first 3 chip selects.
I would like to use DMA if possible.
The first device has a 16Mhz crystal and the other two use the output clock of the first device.
GPIO connections :
gpio5_0 RX0BF_CAN3
gpio5_1 RX1BF_CAN3
gpio5_2 TX0RTS_CAN3
gpio5_3 TX1RTS_CAN3
gpio5_4 TX2RTS_CAN3
gpio5_5 RX0BF_CAN4
gpio5_6 RX1BF_CAN4
gpio5_7 TX0RTS_CAN4
gpio5_8 TX1RTS_CAN4
gpio5_9 TX2RTS_CAN4
gpio5_10 RX0BF_CAN5
gpio5_11 RX1BF_CAN5
gpio5_12 TX0RTS_CAN5
gpio5_13 TX1RTS_CAN5
gpio5_14 TX2RTS_CAN5
gpio6_7 MPU_CAN3_INT
gpio6_8 MPU_CAN4_INT
gpio6_9 MPU_CAN5_INT
SPI port
SPI1_SCK is on SPI1_SCLK on A25
SPI1_CS0 on A24 MPU_CAN3_CS
SPI1_CS1 on A22 MPU_CAN4_CS
SPI1_CS2 on B21 MPU_CAN5_CS
SPI1_D0 on B25 MPU_CAN_SI
SPI1_D1 on F16 MPU_CAN_SO
Michel Catudal
ACTIA Corp
