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drivers/pn532: adapted to SPI interface changes

pr/spi.typo
Hauke Petersen 6 years ago
parent
commit
1ae0ad2509
  1. 102
      drivers/pn532/pn532.c

102
drivers/pn532/pn532.c

@ -31,45 +31,49 @@
#define ENABLE_DEBUG (0)
#include "debug.h"
#define PN532_I2C_ADDRESS (0x24)
#define PN532_I2C_ADDRESS (0x24)
/* Commands */
#define CMD_FIRMWARE_VERSION (0x02)
#define CMD_READ_REG (0x06)
#define CMD_WRITE_REG (0x08)
#define CMD_READ_GPIO (0x0c)
#define CMD_WRITE_GPIO (0x0E)
#define CMD_SAM_CONFIG (0x14)
#define CMD_RF_CONFIG (0x32)
#define CMD_DATA_EXCHANGE (0x40)
#define CMD_DESELECT (0x44)
#define CMD_LIST_PASSIVE (0x4a)
#define CMD_RELEASE (0x52)
#define CMD_FIRMWARE_VERSION (0x02)
#define CMD_READ_REG (0x06)
#define CMD_WRITE_REG (0x08)
#define CMD_READ_GPIO (0x0c)
#define CMD_WRITE_GPIO (0x0E)
#define CMD_SAM_CONFIG (0x14)
#define CMD_RF_CONFIG (0x32)
#define CMD_DATA_EXCHANGE (0x40)
#define CMD_DESELECT (0x44)
#define CMD_LIST_PASSIVE (0x4a)
#define CMD_RELEASE (0x52)
/* Mifare specific commands */
#define MIFARE_CMD_READ (0x30)
#define MIFARE_CMD_WRITE (0xA0)
#define MIFARE_CMD_READ (0x30)
#define MIFARE_CMD_WRITE (0xA0)
/* RF register settings */
#define RF_CONFIG_MAX_RETRIES (0x05)
#define RF_CONFIG_MAX_RETRIES (0x05)
/* Buffer operations */
#define BUFF_CMD_START (6)
#define BUFF_DATA_START (BUFF_CMD_START + 1)
#define RAPDU_DATA_BEGIN (1)
#define RAPDU_MAX_DATA_LEN (PN532_BUFFER_LEN - BUFF_DATA_START - 5)
#define CAPDU_MAX_DATA_LEN (PN532_BUFFER_LEN - BUFF_DATA_START - 1)
#define BUFF_CMD_START (6)
#define BUFF_DATA_START (BUFF_CMD_START + 1)
#define RAPDU_DATA_BEGIN (1)
#define RAPDU_MAX_DATA_LEN (PN532_BUFFER_LEN - BUFF_DATA_START - 5)
#define CAPDU_MAX_DATA_LEN (PN532_BUFFER_LEN - BUFF_DATA_START - 1)
/* Constants and magic numbers */
#define MIFARE_CLASSIC_BLOCK_SIZE (16)
#define RESET_TOGGLE_SLEEP (400000)
#define RESET_BACKOFF (10000)
#define HOST_TO_PN532 (0xD4)
#define PN532_TO_HOST (0xD5)
#define SPI_DATA_WRITE (0x80)
#define SPI_STATUS_READING (0x40)
#define SPI_DATA_READ (0xC0)
#define SPI_WRITE_DELAY_US (2000)
#define MIFARE_CLASSIC_BLOCK_SIZE (16)
#define RESET_TOGGLE_SLEEP (400000)
#define RESET_BACKOFF (10000)
#define HOST_TO_PN532 (0xD4)
#define PN532_TO_HOST (0xD5)
#define SPI_DATA_WRITE (0x80)
#define SPI_STATUS_READING (0x40)
#define SPI_DATA_READ (0xC0)
#define SPI_WRITE_DELAY_US (2000)
/* SPI bus parameters */
#define SPI_MODE (SPI_MODE_0)
#define SPI_CLK (SPI_CLK_1MHZ)
/* Length for passive listings */
#define LIST_PASSIVE_LEN_14443(num) (num * 20)
@ -108,8 +112,6 @@ int pn532_init(pn532_t *dev, const pn532_params_t *params, pn532_mode_t mode)
{
assert(dev != NULL);
int ret = -1;
dev->conf = params;
gpio_init_int(dev->conf->irq, GPIO_IN_PU, GPIO_FALLING,
@ -120,28 +122,26 @@ int pn532_init(pn532_t *dev, const pn532_params_t *params, pn532_mode_t mode)
dev->mode = mode;
if (mode == PN532_I2C) {
#ifdef PN532_SUPPORT_I2C
ret = i2c_init_master(dev->conf->i2c, I2C_SPEED_FAST);
if (i2c_init_master(dev->conf->i2c, I2C_SPEED_FAST) != 0) {
DEBUG("pn532: initialization of I2C bus failed\n");
return -1;
}
#endif
}
else {
#ifdef PN532_SUPPORT_SPI
ret = spi_init_master(dev->conf->spi, SPI_CONF_FIRST_RISING,
SPI_SPEED_1MHZ);
/* we handle the CS line manually... */
gpio_init(dev->conf->nss, GPIO_OUT);
gpio_set(dev->conf->nss);
#endif
}
/* cppcheck-suppress knownConditionTrueFalse
* (reason: variable set when PN532_SUPPORT_{I2C,SPI} defined) */
if (ret == 0) {
pn532_reset(dev);
}
pn532_reset(dev);
mutex_init(&dev->trap);
mutex_lock(&dev->trap);
return ret;
return 0;
}
static unsigned char chksum(char *b, unsigned len)
@ -181,14 +181,15 @@ static int _write(pn532_t *dev, char *buff, unsigned len)
}
else {
#ifdef PN532_SUPPORT_SPI
spi_acquire(dev->conf->spi);
spi_acquire(dev->conf->spi, SPI_CS_UNDEF, SPI_MODE, SPI_CLK);
gpio_clear(dev->conf->nss);
xtimer_usleep(SPI_WRITE_DELAY_US);
reverse(buff, len);
spi_transfer_byte(dev->conf->spi, SPI_DATA_WRITE, NULL);
ret = spi_transfer_bytes(dev->conf->spi, buff, NULL, len);
spi_transfer_byte(dev->conf->spi, SPI_CS_UNDEF, true, SPI_DATA_WRITE);
spi_transfer_bytes(dev->conf->spi, SPI_CS_UNDEF, true, buff, NULL, len);
gpio_set(dev->conf->nss);
spi_release(dev->conf->spi);
ret = (int)len;
#endif
}
DEBUG("pn532: -> ");
@ -213,17 +214,16 @@ static int _read(pn532_t *dev, char *buff, unsigned len)
}
else {
#ifdef PN532_SUPPORT_SPI
spi_acquire(dev->conf->spi);
spi_acquire(dev->conf->spi, SPI_CS_UNDEF, SPI_MODE, SPI_CLK);
gpio_clear(dev->conf->nss);
spi_transfer_byte(dev->conf->spi, SPI_DATA_READ, NULL);
ret = spi_transfer_bytes(dev->conf->spi, 0x00, &buff[1], len);
spi_transfer_byte(dev->conf->spi, SPI_CS_UNDEF, true, SPI_DATA_READ);
spi_transfer_bytes(dev->conf->spi, SPI_CS_UNDEF, true, NULL, &buff[1], len);
gpio_set(dev->conf->nss);
spi_release(dev->conf->spi);
if (ret >= 0) {
buff[0] = 0x80;
reverse(buff, ret);
ret += 1;
}
buff[0] = 0x80;
reverse(buff, len);
ret = (int)len + 1;
#endif
}
DEBUG("pn532: <- ");

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