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Code Issues Releases Wiki Activity

break enable, maintenance loopback

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This commit is contained in:
Joerg Hoppe
2019-06-24 14:51:18 +02:00
parent b749ce5897
commit 28ab69050c
3 changed files with 44 additions and 25 deletions
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27
10.02_devices/2_src/dl11w.cpp
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@@ -61,6 +61,8 @@ slu_c::slu_c() : unibusdevice_c() {
type_name.value = "slu_c";
log_label = "slu";
break_enable.value = 1 ; // SW4-1 per default ON
// SLU has 2 Interrupt vectors: base = RCV, base+= XMT
set_default_bus_params(SLU_ADDR, SLU_VECTOR, SLU_LEVEL); // base addr, intr-vector, intr level
@@ -191,8 +193,12 @@ void slu_c::eval_xcsr_dato_value(void) {
bool new_intr = xmt_ready && xmt_intr_enable;
if (!old_intr && new_intr) // raising edge
interrupt(intr_vector.value + 4, intr_level.value);
if (old_break != xmt_break)
rs232.SetBreak(xmt_break);
if (old_break != xmt_break) {
// re-evaluate break state on bit change
if (break_enable.value)
rs232.SetBreak(xmt_break);
else rs232.SetBreak(0);
}
}
void slu_c::eval_xbuf_dato_value(void) {
@@ -292,10 +298,18 @@ void slu_c::worker_rcv(void) {
// 1. poll with frequency > baudrate, to see single bits
unsigned poll_periods_us = 1000000 / baudrate.value;
/* Receiver not time critical? UARTS are buffering
So if thread is swapped out and back a burst of characters appear.
-> Wait after each character for transfer time before polling
RS232 again.
*/
// worker_init_realtime_priority(rt_device);
while (!workers_terminate) {
timeout.wait_us(poll_periods_us);
// "query
// rcv_active: can only be set by polling the UART inpit GPIiO pin?
// rcv_active: can only be set by polling the UART input GPIO pin?
// at the moments, it is onyl sen on maintenance loopback xmt
/* read serial data, if any */
if (rs232.PollComport((unsigned char*) buffer, 1)) {
@@ -316,7 +330,6 @@ void slu_c::worker_rcv(void) {
n = rs232.PollComport((unsigned char*) buffer, 1);
assert(n); // next char after 0xff 0 seq is data"
rcv_buffer = buffer[0];
rcv_done = 1;
} else if (buffer[0] == 0xff) { // enocoded 0xff
rcv_buffer = 0xff;
} else {
@@ -327,6 +340,7 @@ void slu_c::worker_rcv(void) {
// received non escaped data byte
rcv_buffer = buffer[0];
rcv_done = 1;
rcv_active = 0 ;
set_rbuf_dati_value();
set_rcsr_dati_value(); // INTR!
pthread_mutex_unlock(&on_after_rcv_register_access_mutex); // signal changes atomic against UNIBUS accesses
@@ -336,7 +350,12 @@ void slu_c::worker_rcv(void) {
void slu_c::worker_xmt(void) {
timeout_c timeout;
assert(!pthread_mutex_lock(&on_after_register_access_mutex));
// Transmitter not time critical
// worker_init_realtime_priority(rt_device);
while (!workers_terminate) {
// 1. wait for xmt signal
int res = pthread_cond_wait(&on_after_xmt_register_access_cond, &on_after_xmt_register_access_mutex);