weikai_spi.cpp

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#include "weikai_spi.h"
 
namespace esphome::weikai_spi {
using namespace weikai;
ESPHOME_LOG_TAG(TAG, "weikai_spi");
 
uint32_t elapsed_ms(uint32_t &last_time) {
  uint32_t e = millis() - last_time;
  last_time = millis();
  return e;
};
 
const char *p2s(uart::UARTParityOptions parity) {
  using namespace uart;
  switch (parity) {
    case UART_CONFIG_PARITY_NONE:
      return "NONE";
    case UART_CONFIG_PARITY_EVEN:
      return "EVEN";
    case UART_CONFIG_PARITY_ODD:
      return "ODD";
    default:
      return "UNKNOWN";
  }
}
 
enum RegType { REG = 0, FIFO = 1 };            
enum CmdType { WRITE_CMD = 0, READ_CMD = 1 };  
 
inline static uint8_t cmd_byte(RegType fifo, CmdType transfer_type, uint8_t channel, uint8_t reg) {
  return (fifo << 7 | transfer_type << 6 | channel << 4 | reg << 0);
}
 
// The WeikaiRegisterSPI methods
uint8_t WeikaiRegisterSPI::read_reg() const {
  auto *spi_comp = static_cast<WeikaiComponentSPI *>(this->comp_);
  uint8_t cmd = cmd_byte(REG, READ_CMD, this->channel_, this->register_);
  spi_comp->enable();
  spi_comp->write_byte(cmd);
  uint8_t val = spi_comp->read_byte();
  spi_comp->disable();
  char bin_buf[9];
  ESP_LOGVV(TAG, "WeikaiRegisterSPI::read_reg() cmd=%s(%02X) reg=%s ch=%d buf=%02X", format_bin_to(bin_buf, cmd), cmd,
            LOG_STR_ARG(reg_to_str(this->register_, this->comp_->page1())), this->channel_, val);
  return val;
}
 
void WeikaiRegisterSPI::read_fifo(uint8_t *data, size_t length) const {
  auto *spi_comp = static_cast<WeikaiComponentSPI *>(this->comp_);
  uint8_t cmd = cmd_byte(FIFO, READ_CMD, this->channel_, this->register_);
  spi_comp->enable();
  spi_comp->write_byte(cmd);
  spi_comp->read_array(data, length);
  spi_comp->disable();
#ifdef ESPHOME_LOG_HAS_VERY_VERBOSE
  char bin_buf[9];
  ESP_LOGVV(TAG, "WeikaiRegisterSPI::read_fifo() cmd=%s(%02X) ch=%d len=%d buffer", format_bin_to(bin_buf, cmd), cmd,
            this->channel_, length);
  print_buffer(TAG, data, length);
#endif
}
 
void WeikaiRegisterSPI::write_reg(uint8_t value) {
  auto *spi_comp = static_cast<WeikaiComponentSPI *>(this->comp_);
  uint8_t buf[2]{cmd_byte(REG, WRITE_CMD, this->channel_, this->register_), value};
  spi_comp->enable();
  spi_comp->write_array(buf, 2);
  spi_comp->disable();
  char bin_buf[9];
  ESP_LOGVV(TAG, "WeikaiRegisterSPI::write_reg() cmd=%s(%02X) reg=%s ch=%d buf=%02X", format_bin_to(bin_buf, buf[0]),
            buf[0], LOG_STR_ARG(reg_to_str(this->register_, this->comp_->page1())), this->channel_, buf[1]);
}
 
void WeikaiRegisterSPI::write_fifo(uint8_t *data, size_t length) {
  auto *spi_comp = static_cast<WeikaiComponentSPI *>(this->comp_);
  uint8_t cmd = cmd_byte(FIFO, WRITE_CMD, this->channel_, this->register_);
  spi_comp->enable();
  spi_comp->write_byte(cmd);
  spi_comp->write_array(data, length);
  spi_comp->disable();
 
#ifdef ESPHOME_LOG_HAS_VERY_VERBOSE
  char bin_buf[9];
  ESP_LOGVV(TAG, "WeikaiRegisterSPI::write_fifo() cmd=%s(%02X) ch=%d len=%d buffer", format_bin_to(bin_buf, cmd), cmd,
            this->channel_, length);
  print_buffer(TAG, data, length);
#endif
}
 
// The WeikaiComponentSPI methods
void WeikaiComponentSPI::setup() {
  using namespace weikai;
  ESP_LOGCONFIG(TAG, "Setup %s (%d UARTs)", this->get_name(), this->children_.size());
  this->spi_setup();
  // enable all channels
  this->reg(WKREG_GENA, 0) = GENA_C1EN | GENA_C2EN | GENA_C3EN | GENA_C4EN;
  // reset all channels
  this->reg(WKREG_GRST, 0) = GRST_C1RST | GRST_C2RST | GRST_C3RST | GRST_C4RST;
  // initialize the spage register to page 0
  this->reg(WKREG_SPAGE, 0) = 0;
  this->page1_ = false;
 
  // we setup our children channels
  for (auto *child : this->children_) {
    child->setup_channel();
  }
}
 
void WeikaiComponentSPI::dump_config() {
  ESP_LOGCONFIG(TAG,
                "Initialization of %s with %d UARTs completed\n"
                "  Crystal: %" PRIu32,
                this->get_name(), this->children_.size(), this->crystal_);
  if (test_mode_) {
    ESP_LOGCONFIG(TAG,
                  "  Test mode: %d\n"
                  "  Transfer buffer size: %d",
                  test_mode_, XFER_MAX_SIZE);
  }
  LOG_PIN("  CS Pin: ", this->cs_);
 
  for (auto *child : this->children_) {
    child->dump_channel();
  }
}
 
}  // namespace esphome::weikai_spi