p1load/port.c

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C
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#include <stdio.h>
#include <string.h>
#include <limits.h>
#include "port.h"
#include "ploader.h"
#include "osint.h"
/* CheckPort state structure */
typedef struct {
PL_state *state;
int baud;
int verbose;
char *actualport;
} CheckPortInfo;
void ShowPorts(PL_state *state, char *prefix);
int InitPort(PL_state *state, char *prefix, char *port, int baud, int verbose, char *actualport);
static int ShowPort(const char *port, void *data);
static int CheckPort(const char *port, void *data);
static int OpenPort(PL_state *state, const char *port, int baud);
static void cb_reset(void *data);
static int cb_tx(void *data, uint8_t* buf, int n);
static int cb_rx_timeout(void *data, uint8_t* buf, int n, int timeout);
static void cb_msleep(void *data, int msecs);
static void cb_progress(void *data, int phase);
void InitPortState(PL_state *state)
{
PL_Init(state);
state->reset = cb_reset;
state->tx = cb_tx;
state->rx_timeout = cb_rx_timeout;
state->progress = cb_progress;
state->msleep = cb_msleep;
#ifdef RASPBERRY_PI
{
char cmd[20] = "gpio,17,0";
// use_reset_method uses strtok to parse the string so it can't be a constant
use_reset_method(cmd);
}
#endif
}
void ShowPorts(PL_state *state, char *prefix)
{
serial_find(prefix, ShowPort, state);
}
int InitPort(PL_state *state, char *prefix, char *port, int baud, int verbose, char *actualport)
{
int result;
if (port) {
if (actualport) {
strncpy(actualport, port, PATH_MAX - 1);
actualport[PATH_MAX - 1] = '\0';
}
result = OpenPort(state, port, baud);
}
else {
CheckPortInfo info;
info.state = state;
info.baud = baud;
info.verbose = verbose;
info.actualport = actualport;
if (serial_find(prefix, CheckPort, &info) == 0)
result = CHECK_PORT_OK;
else
result = CHECK_PORT_NO_PROPELLER;
}
return result;
}
static int ShowPort(const char *port, void *data)
{
printf("%s\n", port);
return 1;
}
static int CheckPort(const char *port, void *data)
{
CheckPortInfo *info = (CheckPortInfo*)data;
int rc;
if (info->verbose) {
printf("Trying %s \n", port);
fflush(stdout);
}
if ((rc = OpenPort(info->state, port, info->baud)) != CHECK_PORT_OK)
return rc;
if (info->actualport) {
strncpy(info->actualport, port, PATH_MAX - 1);
info->actualport[PATH_MAX - 1] = '\0';
}
return 0;
}
static int OpenPort(PL_state *state, const char *port, int baud)
{
/* open the port */
if (serial_init(port, baud) == 0)
return CHECK_PORT_OPEN_FAILED;
/* check for a propeller on this port */
if (PL_HardwareFound(state, &state->version) != LOAD_STS_OK) {
serial_done();
return CHECK_PORT_NO_PROPELLER;
}
return CHECK_PORT_OK;
}
static void cb_reset(void *data)
{
hwreset();
}
static int cb_tx(void *data, uint8_t* buf, int n)
{
return tx(buf, n);
}
static int cb_rx_timeout(void *data, uint8_t* buf, int n, int timeout)
{
return rx_timeout(buf, n, timeout);
}
static void cb_msleep(void *data, int msecs)
{
msleep(msecs);
}
static void cb_progress(void *data, int phase)
{
switch (phase) {
case LOAD_PHASE_HANDSHAKE:
break;
case LOAD_PHASE_RESPONSE:
break;
case LOAD_PHASE_VERSION:
break;
case LOAD_PHASE_HANDSHAKE_DONE:
break;
case LOAD_PHASE_PROGRAM:
printf("Loading hub memory ... ");
fflush(stdout);
break;
case LOAD_PHASE_EEPROM_WRITE:
printf("OK\nWriting EEPROM ... ");
fflush(stdout);
break;
case LOAD_PHASE_EEPROM_VERIFY:
printf("OK\nVerifying EEPROM ... ");
fflush(stdout);
break;
case LOAD_PHASE_DONE:
break;
default:
break;
}
}