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最近想把PN532通过ttl连接到树莓派上，通过Google上的一些教学贴，已经安装好了libnfc和libusb等，但是在执行nfc-list,nfc-scan-device -v时报错

nfc-scan-device -v报错如下：
debug    libnfc.general    log_level is set to 3
debug    libnfc.general    allow_autoscan is set to true
debug    libnfc.general    allow_intrusive_scan is set to false
debug    libnfc.general    1 device(s) defined by user
debug    libnfc.general      #0 name: "Itead_PN532_SPI", connstring: "pn532_uart:/dev/ttyAMA0"
nfc-scan-device uses libnfc 1.7.1
1 NFC device(s) found:
debug    libnfc.driver.pn532_uart    Attempt to open: /dev/ttyAMA0 at 115200 bauds.
debug    libnfc.bus.uart    Serial port speed requested to be set to 115200 bauds.
debug    libnfc.chip.pn53x    Diagnose
debug    libnfc.chip.pn53x    Timeout value: 500
debug    libnfc.bus.uart    TX: 55 55 00 00 00 00 00 00 00 00 00 00 00 00 00 00
error    libnfc.driver.pn532_uart    pn53x_check_communication error
debug    libnfc.chip.pn53x    InRelease
debug    libnfc.bus.uart    TX: 00 00 ff 03 fd d4 52 00 da 00
error    libnfc.driver.pn532_uart    Unable to transmit data. (TX)
debug    libnfc.general    Unable to open "pn532_uart:/dev/ttyAMA0".
nfc_open failed for pn532_uart:/dev/ttyAMA0

libnfc.conf内容：
# Allow device auto-detection (default: true)
# Note: if this auto-detection is disabled, user has to set manually a device
# configuration using file or environment variable
allow_autoscan = true

# Allow intrusive auto-detection (default: false)
# Warning: intrusive auto-detection can seriously disturb other devices
# This option is not recommended, user should prefer to add manually his device.
allow_intrusive_scan = false

# Set log level (default: error)
# Valid log levels are (in order of verbosity): 0 (none), 1 (error), 2 (info), 3 (debug)
# Note: if you compiled with --enable-debug option, the default log level is "debug"
log_level = 3

# Manually set default device (no default)
# To set a default device, you must set both name and connstring for your device
# Note: if autoscan is enabled, default device will be the first device available in device list.
device.name = "Itead_PN532_SPI"
device.connstring = "pn532_uart:/dev/ttyAMA0"

求助各位dalao，万分感谢

最近编辑记录 C-starm (2018-12-27 12:51:07)