hdw-ch32v003.h File Reference

Detailed Description

This file contains the header to control the semihosted ch32v003 via the swio programming pin.

Go to the source code of this file.

Macros
#define	CH32V003_MAX_IMAGE_SLOTS   20
#define	ch32v003RunBinaryAsset(asset)
	Load and run a binary image from the assets folder on the ch32v003. Included as a #define because we can't include main functionality in a module.

Functions
int	initCh32v003 (int swdio_pin)
int	ch32v003WriteFlash (const uint8_t *buf, int sz)
	Write data into the ch32v003's flash.
int	ch32v003WriteMemory (const uint8_t *binary, uint32_t length, uint32_t address)
	Write to memory on the ch32v003.
int	ch32v003ReadMemory (uint8_t *binary, uint32_t length, uint32_t address)
	Read data from the ch32v003's memory space into host processor memory space.
int	ch32v003GetReg (int regno, uint32_t *value)
	Read ch32v003 debug module registers.
int	ch32v003SetReg (int regno, uint32_t regValue)
	Write ch32v003 debug module registers.
int	ch32v003Resume ()
	Cause the 003 to reboot and execute the program loaded into it.
void	ch32v003CheckTerminal ()
	See if the ch32v003 has any pending printf to print on host processor.
void	ch32v003Teardown ()
	Disables ch32v003 communications.
int	ch32v003WriteBitmapAsset (int slot, int asset_idx)
	Halt the processor, and write to RAM a greyscale asset image.
int	ch32v003WriteBitmap (int slot, uint8_t pixels[6][12])
	Write a 12x6 pixel greyscale image into a RAM slot on the ch32v003.
int	ch32v003SelectBitmap (int slot)
	Override the DMA pointer on the 003 to point at a pre-loaded image in RAM.
void	ch32v003EmuDraw (int window_w, int window_h)

Macro Definition Documentation

CH32V003_MAX_IMAGE_SLOTS

#define CH32V003_MAX_IMAGE_SLOTS   20

ch32v003RunBinaryAsset

#define ch32v003RunBinaryAsset

(

asset

)

Value:

    ({                                                    \
        size_t sz;                                        \
        const uint8_t* buf = cnfsGetFile(asset, &sz);     \
        int r              = ch32v003WriteFlash(buf, sz); \
        ch32v003Resume();                                 \
        r;                                                \
    })

Load and run a binary image from the assets folder on the ch32v003. Included as a #define because we can't include main functionality in a module.

Parameters

asset

cnfsFileIdx_t of a binary image to be loaded into a location in the ch32v003. This must be of type cnfsFileIdx_t

Returns

0 if OK, nonzero in error condition.

Function Documentation

initCh32v003()

int initCh32v003

(

int

swdio_pin

)

ch32v003WriteFlash()

int ch32v003WriteFlash	(	const uint8_t *	buf,
		int	sz )

Write data into the ch32v003's flash.

Parameters

buf	A pointer to a binary image in the master processor
sz	The size of the binary image to be written

Returns

0 if OK, nonzero in error condition.

ch32v003WriteMemory()

int ch32v003WriteMemory	(	const uint8_t *	binary,
		uint32_t	length,
		uint32_t	offset )

Write to memory on the ch32v003.

Parameters

binary	A binary image to be loaded into a location in the ch32v003.
length	The size of the binary image.
offset	The offset of the binary image.s

ch32v003ReadMemory()

int ch32v003ReadMemory	(	uint8_t *	binary,
		uint32_t	length,
		uint32_t	offset )

Read data from the ch32v003's memory space into host processor memory space.

Parameters

binary	A pointer to a buffer in the host processor
length	The number of bytes to read
offset	The location of memory to read in the ch32v003

Returns

0 if OK, nonzero if error.

ch32v003GetReg()

int ch32v003GetReg	(	int	regno,
		uint32_t *	value )

Read ch32v003 debug module registers.

Parameters

regno	The debug module register number.
value	A pointer to the uint32_t to receive that register's value.

Returns

0 if OK, nonzero if error.

ch32v003SetReg()

int ch32v003SetReg	(	int	regno,
		uint32_t	regValue )

Write ch32v003 debug module registers.

Parameters

regno	The debug module register number.
regValue	The value to write into that debug module regsiter

Returns

0 if OK, nonzero if error.

ch32v003Resume()

int ch32v003Resume

(

)

Cause the 003 to reboot and execute the program loaded into it.

Returns

0 if OK, nonzero in error condition.

ch32v003CheckTerminal()

void ch32v003CheckTerminal

(

)

See if the ch32v003 has any pending printf to print on host processor.

ch32v003Teardown()

void ch32v003Teardown

(

)

Disables ch32v003 communications.

ch32v003WriteBitmapAsset()

int ch32v003WriteBitmapAsset	(	int	slot,
		int	asset_idx )

Halt the processor, and write to RAM a greyscale asset image.

Parameters

slot	Must be less than CH32V003_MAX_IMAGE_SLOTS.
asset_idx	Is a .gs.png asset, for instance EYES_DEFAULT_GS (From eyes_default.gs.png). This image must be 12x6 pixels in size.

Returns

0 if OK, nonzero if error.

ch32v003WriteBitmap()

int ch32v003WriteBitmap	(	int	slot,
		uint8_t	pixels[6][12] )

Write a 12x6 pixel greyscale image into a RAM slot on the ch32v003.

Parameters

slot	Must be less than CH32V003_MAX_IMAGE_SLOTS.
pixels	are a greyscale image to be written out.

Returns

0 if OK, nonzero if error.

ch32v003SelectBitmap()

int ch32v003SelectBitmap

(

int

slot

)

Override the DMA pointer on the 003 to point at a pre-loaded image in RAM.

Parameters

slot	Must be less than CH32V003_MAX_IMAGE_SLOTS.

Returns

0 if OK, nonzero if error.

ch32v003EmuDraw()

void ch32v003EmuDraw	(	int	window_w,
		int	window_h )