Comments (3)
I have beat the code to work.
Expose get_buffer_used
, because is not accessible outside, then use this to see if there is something to read. Get A->B and B->A talking.
RAM_CODE static inline size_t get_buffer_used(struct queue_buffer_t *buffer_p)
{
if (buffer_p->begin_p == NULL) {
return (0);
}
if (buffer_p->write_p == buffer_p->read_p) {
return (0);
} else if (buffer_p->write_p > buffer_p->read_p) {
return (buffer_p->write_p - buffer_p->read_p);
} else {
return ((buffer_p->end_p - buffer_p->begin_p)
- (buffer_p->read_p - buffer_p->write_p));
}
}
/************************************************************/
int loopExample1(struct uart_driver_t *s_hw, struct uart_soft_driver_t *s_485, struct pin_driver_t *pinT)
{
char c = 0;
while (1)
{
while (get_buffer_used(&s_hw->chin.buffer) > 0)
{
chan_read(&s_hw->chin, &c, sizeof(c));
/* enable sending */
pin_write(pinT, 1);
chan_write(&s_485->chout, &c, sizeof(c));
/* disable sending */
pin_write(pinT, 0);
}
while (get_buffer_used(&s_485->chin.buffer) > 0)
{
chan_read(&s_485->chin, &c, sizeof(c));
chan_write(&s_hw->chout, &c, sizeof(c));
}
}
return 0;
}
This is wrong?
I don't known IF this is the right function to call, none if this is the right way.
PS, there is a exemple using shell and threads? I have searched in google, without success.
So, I can put rs485 inside a thread, only to receive/reply commands, and let HardwareSerial to Shell to manage the system.
from simba.
Sorry, but I don't have time to look into this i detail. But yes, a list can be used if data is expected in one or more channels. Also there is a chan_size()
function to see how many betys that can be read.
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@softov Actually the delay(10);
in the original Arduino sketch is really important.
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