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Pn532 upgrades (#1302)

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* 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
This commit is contained in:
Jesse Hills
2020-11-01 11:55:48 +13:00
committed by GitHub
parent 22e1758d5b
commit 0059a6de46
12 changed files with 415 additions and 261 deletions
Download Patch File Download Diff File Expand all files Collapse all files
esphome/components/pn532/pn532.h
+17 -33
View File
@@ -3,17 +3,20 @@
#include "esphome/core/component.h"
#include "esphome/core/automation.h"
#include "esphome/components/binary_sensor/binary_sensor.h"
#include "esphome/components/spi/spi.h"
namespace esphome {
namespace pn532 {
static const uint8_t PN532_COMMAND_VERSION_DATA = 0x02;
static const uint8_t PN532_COMMAND_SAMCONFIGURATION = 0x14;
static const uint8_t PN532_COMMAND_RFCONFIGURATION = 0x32;
static const uint8_t PN532_COMMAND_INDATAEXCHANGE = 0x40;
static const uint8_t PN532_COMMAND_INLISTPASSIVETARGET = 0x4A;
class PN532BinarySensor;
class PN532Trigger;
class PN532 : public PollingComponent,
public spi::SPIDevice<spi::BIT_ORDER_LSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
spi::DATA_RATE_1MHZ> {
class PN532 : public PollingComponent {
public:
void setup() override;
@@ -28,38 +31,19 @@ class PN532 : public PollingComponent,
void register_trigger(PN532Trigger *trig) { this->triggers_.push_back(trig); }
protected:
/// Write the full command given in data to the PN532
void pn532_write_command_(const std::vector<uint8_t> &data);
bool pn532_write_command_check_ack_(const std::vector<uint8_t> &data);
/** Read a data frame from the PN532 and return the result as a vector.
*
* Note that is_ready needs to be checked first before requesting this method.
*
* On failure, an empty vector is returned.
*/
std::vector<uint8_t> pn532_read_data_();
/** Checks if the PN532 has set its ready status flag.
*
* Procedure goes as follows:
* - Host sends command to PN532 "write data"
* - Wait for readiness (until PN532 has processed command) by polling "read status"/is_ready_
* - Parse ACK/NACK frame with "read data" byte
*
* - If data required, wait until device reports readiness again
* - Then call "read data" and read certain number of bytes (length is given at offset 4 of frame)
*/
bool is_ready_();
bool wait_ready_();
bool read_ack_();
void turn_off_rf_();
bool write_command_(const std::vector<uint8_t> &data);
bool read_response_(uint8_t command, std::vector<uint8_t> &data);
bool read_ack_();
uint8_t read_response_length_();
virtual bool write_data(const std::vector<uint8_t> &data) = 0;
virtual bool read_data(std::vector<uint8_t> &data, uint8_t len) = 0;
bool requested_read_{false};
std::vector<PN532BinarySensor *> binary_sensors_;
std::vector<PN532Trigger *> triggers_;
std::vector<uint8_t> current_uid_;
enum PN532Error {
NONE = 0,
WAKEUP_FAILED,
@@ -71,7 +55,7 @@ class PN532BinarySensor : public binary_sensor::BinarySensor {
public:
void set_uid(const std::vector<uint8_t> &uid) { uid_ = uid; }
bool process(const uint8_t *data, uint8_t len);
bool process(std::vector<uint8_t> &data);
void on_scan_end() {
if (!this->found_) {
@@ -87,7 +71,7 @@ class PN532BinarySensor : public binary_sensor::BinarySensor {
class PN532Trigger : public Trigger<std::string> {
public:
void process(const uint8_t *uid, uint8_t uid_length);
void process(std::vector<uint8_t> &data);
};
} // namespace pn532