mirror of
https://github.com/Threnklyn/esphome-dev.git
synced 2026-05-26 15:48:28 +02:00
Jesse Hills
0059a6de46
* Move pn532 -> pn532_spi Add pn532_i2c * Update i2c address * Always wait for ready byte before reading * Generalise the pn532 a bit more so less code in i2c and spi implementations * clang * Add pn532_i2c to test1 * Try to get setup working * Fixes * More updates * Command consts * A few upgrades * Change text back to include 'new' * Fix data reading
70 lines
1.6 KiB
C++
70 lines
1.6 KiB
C++
#include "pn532_spi.h"
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#include "esphome/core/log.h"
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// Based on:
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// - https://cdn-shop.adafruit.com/datasheets/PN532C106_Application+Note_v1.2.pdf
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// - https://www.nxp.com/docs/en/nxp/application-notes/AN133910.pdf
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// - https://www.nxp.com/docs/en/nxp/application-notes/153710.pdf
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namespace esphome {
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namespace pn532_spi {
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static const char *TAG = "pn532_spi";
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void PN532Spi::setup() {
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ESP_LOGI(TAG, "PN532Spi setup started!");
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this->spi_setup();
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this->cs_->digital_write(false);
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delay(10);
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ESP_LOGI(TAG, "SPI setup finished!");
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PN532::setup();
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}
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bool PN532Spi::write_data(const std::vector<uint8_t> &data) {
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this->enable();
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delay(2);
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// First byte, communication mode: Write data
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this->write_byte(0x01);
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this->write_array(data.data(), data.size());
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this->disable();
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return true;
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}
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bool PN532Spi::read_data(std::vector<uint8_t> &data, uint8_t len) {
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this->enable();
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// First byte, communication mode: Read state
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this->write_byte(0x02);
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uint32_t start_time = millis();
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while (true) {
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if (this->read_byte() & 0x01)
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break;
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if (millis() - start_time > 100) {
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this->disable();
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ESP_LOGV(TAG, "Timed out waiting for readiness from PN532!");
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return false;
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}
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}
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// Read data (transmission from the PN532 to the host)
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this->write_byte(0x03);
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data.resize(len);
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this->read_array(data.data(), len);
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this->disable();
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data.insert(data.begin(), 0x01);
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return true;
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};
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void PN532Spi::dump_config() {
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PN532::dump_config();
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LOG_PIN(" CS Pin: ", this->cs_);
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}
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} // namespace pn532_spi
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} // namespace esphome
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