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interrupt safe USB send function

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This commit is contained in:
Jan Käberich 2022-08-21 22:20:59 +02:00
parent 5137457545
commit c05d248f83
13 changed files with 38 additions and 73 deletions
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11
Software/VNA_embedded/Application/Drivers/USB/usb.c
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@ -230,7 +230,6 @@ bool usb_transmit(const uint8_t *data, uint16_t length) {
// grab pointer to write position
__disable_irq();
uint16_t write_index = usb_transmit_read_index + usb_transmit_fifo_level;
__enable_irq();
write_index %= sizeof(usb_transmit_fifo);
// copy the data to the fifo
uint16_t continous_length = sizeof(usb_transmit_fifo) - write_index;
@ -243,21 +242,19 @@ bool usb_transmit(const uint8_t *data, uint16_t length) {
memcpy(&usb_transmit_fifo[0], data + continous_length, length - continous_length);
}
// increment fifo level
__disable_irq();
usb_transmit_fifo_level += length;
__enable_irq();
static bool first = true;
if(first) {
log_transmission_active = false;
first = false;
}
bool ret = true;
if(!data_transmission_active) {
return trigger_next_fifo_transmission();
} else {
// still transmitting, no need to trigger
return true;
ret = trigger_next_fifo_transmission();
}
__enable_irq();
return ret;
}
void usb_log(const char *log, uint16_t length) {