transmit.c

#include "sx1262/sx1262.h"
#include "sx1262/sx126x.h"
#include "sx1262/sx126x_hal.h"
#include "mculibrary.h"
#include "networkif.h"
#include "metrics/metrics.h"
static volatile byte transmitting = 0;
int sx1262_transmit_fail_counter = 0;
void sx1262_done_transmit() {
  transmitting = 0;
  printf("[sx1262] lora transmit lock released\r\n");
}
int sx1262_is_transmitting() {
  return transmitting;
}
int sx1262_busy(struct network_context *nctx) {
  return transmitting;
}
 
// called by irq handler if chip signals it is done
void transmit_complete_irq() {
  transmitting = 1;
  printf("[sx1262] Transmit complete\r\n");
  sx1262_switch_to_rx();
}
 
// afaict: set transmit buffer offset to 0 and write to it at that address, then trigger transmit
int sx1262_transmit(struct network_context *nctx, const uint8_t *buf, uint16_t size) {
  if (size > 255) {
    printf("[sx1262] LoRA maximum packet size is 255 bytes. attempt to send %i bytes\r\n", size);
    return 1;
  }
  sx1262_clear_rx_mode();
  printf("[sx1262] Transmitting %i bytes\r\n", size);
  // goto standby mode so not to overwrite buffer in case we just receive one now..
 
  sx1262_set_lora_packet_type(nctx);
 
  // txparams
  sx126x_set_tx_params(nctx, 22, SX126X_RAMP_200_US);
  // set buf address & write
  sx126x_set_buffer_base_address(nctx, 0, 0);
  sx126x_write_buffer(nctx, 0, buf, size);
  //setmodulationparams
  sx1262_set_lora_parameters(nctx);
  //setpacketparams
  sx1262_set_packet_params(nctx, size);
 
  //setioirqparams
  //sync work value
  sx126x_set_tx(nctx, 3000); // try for max. 3 seconds
  transmitting = 2;
  // clear irq txdone flag
  print_chip_status(nctx, 1);
  IncMetric_PKTS_LORA_CTR_OUT;
  return 0;
}