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/*
stm32flash - Open Source ST STM32 flash program for *nix
Copyright (C) 2014 Antonio Borneo <borneo.antonio@gmail.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _H_PORT
#define _H_PORT
typedef enum {
PORT_ERR_OK = 0,
PORT_ERR_NODEV, /* No such device */
PORT_ERR_TIMEDOUT, /* Operation timed out */
PORT_ERR_BAUD, /* Unsupported baud rate */
PORT_ERR_UNKNOWN,
} port_err_t;
/* flags */
#define PORT_BYTE (1 << 0) /* byte (not frame) oriented */
#define PORT_GVR_ETX (1 << 1) /* cmd GVR returns protection status */
#define PORT_CMD_INIT (1 << 2) /* use INIT cmd to autodetect speed */
#define PORT_RETRY (1 << 3) /* allowed read() retry after timeout */
#define PORT_STRETCH_W (1 << 4) /* warning for no-stretching commands */
#define PORT_NPAG_CSUM (1 << 5) /* checksum after number of pages to erase */
/* all options and flags used to open and configure an interface */
struct port_options {
const char *device;
serial_baud_t baudRate;
const char *serial_mode;
int bus_addr;
int rx_frame_max;
int tx_frame_max;
};
/*
* Specify the length of reply for command GET
* This is helpful for frame-oriented protocols, e.g. i2c, to avoid time
* consuming try-fail-timeout-retry operation.
* On byte-oriented protocols, i.e. UART, this information would be skipped
* after read the first byte, so not needed.
*/
struct varlen_cmd {
uint8_t version;
uint8_t length;
};
struct port_interface {
const char *name;
unsigned flags;
port_err_t (*open)(struct port_interface *port, struct port_options *ops);
port_err_t (*close)(struct port_interface *port);
port_err_t (*flush)(struct port_interface *port);
port_err_t (*read)(struct port_interface *port, void *buf, size_t nbyte);
port_err_t (*write)(struct port_interface *port, void *buf, size_t nbyte);
port_err_t (*gpio)(struct port_interface *port, serial_gpio_t n, int level);
const char *(*get_cfg_str)(struct port_interface *port);
struct varlen_cmd *cmd_get_reply;
void *private;
};
port_err_t port_open(struct port_options *ops, struct port_interface **outport);
#endif
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