dfu.cpp

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#include "dfu.h"
 
#ifdef USE_NRF52_DFU
 
#include "esphome/core/log.h"
#include "esphome/components/zephyr/cdc_acm.h"
 
namespace esphome {
namespace nrf52 {
 
static const char *const TAG = "dfu";
 
static const uint32_t DFU_DBL_RESET_MAGIC = 0x5A1AD5;  // SALADS
 
void DeviceFirmwareUpdate::setup() {
  this->reset_pin_->setup();
#if defined(CONFIG_CDC_ACM_DTE_RATE_CALLBACK_SUPPORT)
  zephyr::global_cdc_acm->add_on_rate_callback([this](const device *, uint32_t rate) {
    if (rate == 1200) {
      volatile uint32_t *dbl_reset_mem = (volatile uint32_t *) 0x20007F7C;
      (*dbl_reset_mem) = DFU_DBL_RESET_MAGIC;
      this->reset_pin_->digital_write(true);
    }
  });
#endif
}
 
void DeviceFirmwareUpdate::dump_config() {
  ESP_LOGCONFIG(TAG, "DFU:");
  LOG_PIN("  RESET Pin: ", this->reset_pin_);
}
 
}  // namespace nrf52
}  // namespace esphome
 
#endif