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)