swd.c File Reference

Serial Wire Debug (SWD) functions. More...

Include dependency graph for swd.c:

Go to the source code of this file.

Functions
JAYLINK_API int	jaylink_swd_io (struct jaylink_device_handle *devh, const uint8_t *direction, const uint8_t *out, uint8_t *in, uint16_t length)
	Perform a SWD I/O operation. More...

Detailed Description

Serial Wire Debug (SWD) functions.

Definition in file swd.c.

Function Documentation

jaylink_swd_io()

JAYLINK_API int jaylink_swd_io	(	struct jaylink_device_handle *	devh,
		const uint8_t *	direction,
		const uint8_t *	out,
		uint8_t *	in,
		uint16_t	length
	)

Perform a SWD I/O operation.

Note

This function must only be used if the JAYLINK_TIF_SWD interface is available and selected.

Parameters

[in,out]	devh	Device handle.
[in]	direction	Buffer to read the transfer direction from.
[in]	out	Buffer to read host-to-target data from.
[out]	in	Buffer to store target-to-host data on success. Its content is undefined on failure. The buffer must be large enough to contain at least the specified number of bits to transfer.
[in]	length	Total number of bits to transfer from host to target and vice versa.

Return values

JAYLINK_OK	Success.
JAYLINK_ERR_ARG	Invalid arguments.
JAYLINK_ERR_TIMEOUT	A timeout occurred.
JAYLINK_ERR_IO	Input/output error.
JAYLINK_ERR_DEV_NO_MEMORY	Not enough memory on the device to perform the operation.
JAYLINK_ERR_DEV	Unspecified device error.
JAYLINK_ERR	Other error conditions.

See also

jaylink_select_interface()

jaylink_set_speed()

Since

0.1.0

Definition at line 71 of file swd.c.

References buffer_set_u16(), jaylink_device::ctx, jaylink_device_handle::dev, JAYLINK_ERR_ARG, JAYLINK_ERR_DEV, JAYLINK_ERR_DEV_NO_MEMORY, JAYLINK_OK, jaylink_strerror(), log_err(), transport_read(), transport_start_write_read(), and transport_write().

Referenced by jlink_swd_run_queue().