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Monitor mode in C API and i2ccl

This commit is contained in:
James Bowman 2019-02-23 15:56:26 -08:00
parent 11d49d4f20
commit 096174c615
2 changed files with 19 additions and 0 deletions
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17
c/common/i2cdriver.c
View File

@ -338,6 +338,11 @@ void i2c_read(I2CDriver *sd, uint8_t bytes[], size_t nn)
} }
} }
void i2c_monitor(I2CDriver *sd, int enable)
{
writeToSerialPort(sd->port, enable ? "m" : "@", 1);
}
int i2c_commands(I2CDriver *sd, int argc, char *argv[]) int i2c_commands(I2CDriver *sd, int argc, char *argv[])
{ {
int i; int i;
@ -429,6 +434,17 @@ int i2c_commands(I2CDriver *sd, int argc, char *argv[])
i2c_stop(sd); i2c_stop(sd);
break; break;
case 'm':
{
char line[100];
i2c_monitor(sd, 1);
printf("[Hit return to exit monitor mode]\n");
fgets(line, sizeof(line) - 1, stdin);
i2c_monitor(sd, 0);
}
break;
default: default:
badcommand: badcommand:
fprintf(stderr, "Bad command '%s'\n", token); fprintf(stderr, "Bad command '%s'\n", token);
@ -440,6 +456,7 @@ int i2c_commands(I2CDriver *sd, int argc, char *argv[])
fprintf(stderr, " w dev <bytes> write bytes to I2C device dev\n"); fprintf(stderr, " w dev <bytes> write bytes to I2C device dev\n");
fprintf(stderr, " p send a STOP\n"); fprintf(stderr, " p send a STOP\n");
fprintf(stderr, " r dev N read N bytes from I2C device dev, then STOP\n"); fprintf(stderr, " r dev N read N bytes from I2C device dev, then STOP\n");
fprintf(stderr, " m enter I2C bus monitor mode\n");
fprintf(stderr, "\n"); fprintf(stderr, "\n");
return 1; return 1;

2
c/common/i2cdriver.h
View File

@ -34,6 +34,8 @@ int i2c_write(I2CDriver *sd, const uint8_t bytes[], size_t nn);
void i2c_read(I2CDriver *sd, uint8_t bytes[], size_t nn); void i2c_read(I2CDriver *sd, uint8_t bytes[], size_t nn);
void i2c_stop(I2CDriver *sd); void i2c_stop(I2CDriver *sd);
void i2c_monitor(I2CDriver *sd, int enable);
int i2c_commands(I2CDriver *sd, int argc, char *argv[]); int i2c_commands(I2CDriver *sd, int argc, char *argv[]);
#endif #endif