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合宙Air780E模组linux平台适配
参考链接
https://doc.openluat.com/wiki/37?wiki_page_id=4454
测试环境
硬件: Air780E-H模组 君正x2000_HALLEY5_V3.1开发板 SIM卡 软件: Air780E-H模组固件AirM2M_780E_V1149_LTE_LPAT.binpkg 君正4.4.94/5.10内核
内核驱动配置
usb host RNDIS驱动配置
Symbol: USB_USBNET [=y] Type : tristate Defined at drivers/net/usb/Kconfig:133 Prompt: Multi-purpose USB Networking Framework Depends on: NETDEVICES [=y] && USB_NET_DRIVERS [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) (1) -> USB Network Adapters (USB_NET_DRIVERS [=y]) Selects: MII [=y] Selected by [y]: - USB_NET_RNDIS_WLAN [=y] && NETDEVICES [=y] && WLAN [=y] && USB [=y] && CFG80211 [=y]
Symbol: USB_NET_RNDIS_HOST [=y] Type : tristate Defined at drivers/net/usb/Kconfig:398 Prompt: Host for RNDIS and ActiveSync devices Depends on: NETDEVICES [=y] && USB_NET_DRIVERS [=y] && USB_USBNET [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> USB Network Adapters (USB_NET_DRIVERS [=y]) -> Multi-purpose USB Networking Framework (USB_USBNET [=y]) Selects: USB_NET_CDCETHER [=y] Selected by [y]: - USB_NET_RNDIS_WLAN [=y] && NETDEVICES [=y] && WLAN [=y] && USB [=y] && CFG80211 [=y]
Symbol: USB_NET_RNDIS_WLAN [=y] Type : tristate Defined at drivers/net/wireless/Kconfig:91 Prompt: Wireless RNDIS USB support Depends on: NETDEVICES [=y] && WLAN [=y] && USB [=y] && CFG80211 [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> Wireless LAN (WLAN [=y]) Selects: USB_NET_DRIVERS [=y] && USB_USBNET [=y] && USB_NET_CDCETHER [=y] && \ USB_NET_RNDIS_HOST [=y]
usb host ACM驱动配置
Symbol: USB_ACM [=y] Type : tristate Defined at drivers/usb/class/Kconfig:7 Prompt: USB Modem (CDC ACM) support Depends on: USB_SUPPORT [=y] && USB [=y] && TTY [=y] Location: -> Device Drivers -> USB support (USB_SUPPORT [=y]) Selected by [n]: - USB_VL600 [=n] && NETDEVICES [=y] && USB_NET_DRIVERS [=y] && USB_NET_CDCETHER [=y] && TTY [=y] - USB_PULSE8_CEC [=n] && MEDIA_CEC_SUPPORT [=n] && USB_SUPPORT [=y] && TTY [=y] - USB_RAINSHADOW_CEC [=n] && MEDIA_CEC_SUPPORT [=n] && USB_SUPPORT [=y] && TTY [=y]
使用方法
将Air780E模块通过usb线连接到开发板
长按Air780E模块POW按键开机,开发板作为usb主机识别到usb网卡设备
# [ 8441.650016] usb 1-1: new high-speed USB device number 7 using dwc2 [ 8441.901615] usb 1-1: New USB device found, idVendor=19d1, idProduct=0001, bcdDevice= 2.00 [ 8441.910095] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 8441.917460] usb 1-1: Product: EigenComm Compo [ 8441.921979] usb 1-1: Manufacturer: EigenComm [ 8441.926389] usb 1-1: SerialNumber: 000000000001 [ 8441.935474] rndis_host 1-1:1.0 eth0: register 'rndis_host' at usb-13500000.otg-1, RNDIS device, 20:89:84:6a:96:ab [ 8441.963514] cdc_acm 1-1:1.2: ttyACM0: USB ACM device [ 8441.986680] cdc_acm 1-1:1.4: ttyACM1: USB ACM device [ 8442.011365] cdc_acm 1-1:1.6: ttyACM2: USB ACM device
查看Air780E网卡信息
> #ifconfig -a eth0 Link encap:Ethernet HWaddr 20:89:84:6A:96:AB BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) eth1 Link encap:Ethernet HWaddr 12:5E:71:1E:48:65 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
使用eth0接口获取DHCP地址
> #udhcpc -i eth0 udhcpc: started, v1.31.1 udhcpc: sending discover udhcpc: sending select for 192.168.10.2 udhcpc: lease of 192.168.10.2 obtained, lease time 86400 deleting routers adding dns 192.168.10.3 adding dns 192.168.10.4
> #ifconfig -a eth0 Link encap:Ethernet HWaddr 20:89:84:6A:96:AB inet addr:192.168.10.2 Bcast:192.168.10.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7 errors:0 dropped:5 overruns:0 frame:0 TX packets:2 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1296 (1.2 KiB) TX bytes:772 (772.0 B) eth1 Link encap:Ethernet HWaddr 12:5E:71:1E:48:65 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
联网测试
> #ping www.baidu.com PING www.baidu.com (220.181.38.149): 56 data bytes 64 bytes from 220.181.38.149: seq=0 ttl=52 time=19.777 ms 64 bytes from 220.181.38.149: seq=1 ttl=52 time=35.005 ms 64 bytes from 220.181.38.149: seq=2 ttl=52 time=42.940 ms 64 bytes from 220.181.38.149: seq=3 ttl=52 time=33.574 ms 64 bytes from 220.181.38.149: seq=4 ttl=52 time=42.402 ms
使用提供的sendat小工具发送AT指令(ttyACM2为Air780E模块AT指令发送节点)
> #./sendat /dev/ttyACM2 AT OK AT+CPIN? +CPIN: READY OK AT+CEREG? +CEREG: 0,1 OK AT+CSQ +CSQ: 21,0 OK ATI AirM2M_780E_V1149_LTE_LPAT OK
sendat应用程序
编译即可使用
#include <unistd.h>
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <termios.h>
#include <sys/types.h>
#include <poll.h>
int ttyfd;
int stdout_changed = 0;
int tty_changed = 0;
struct termios stdout_tio;
struct termios tty_tio;
void restore_tio()
{
if (stdout_changed)
{
stdout_tio.c_lflag |= ECHO;
tcsetattr(STDIN_FILENO, TCSANOW, &stdout_tio);
}
if (tty_changed)
tcsetattr(ttyfd, TCSANOW, &tty_tio);
}
void int_handler(int signum)
{
close(ttyfd);
exit(EXIT_SUCCESS);
}
int main(int args, const char *argv[])
{
if (args != 2)
{
fprintf(stderr, "Usage: ./sendat ttyACM\n");
exit(EXIT_FAILURE);
}
atexit(restore_tio);
char readbuf[256];
const char *ttyPath = argv[1];
const char *atCommand = argv[2];
ttyfd = open(ttyPath, O_RDWR | O_NOCTTY | O_NDELAY);
if (ttyfd < 0)
{
perror("open");
exit(EXIT_FAILURE);
}
signal(SIGINT, int_handler);
struct termios tio;
int ret = tcgetattr(ttyfd, &tio);
if (ret == -1)
{
perror("tcgetattr");
exit(EXIT_FAILURE);
}
memcpy(&tty_tio, &tio, sizeof(struct termios));
tio.c_iflag = 0;
tio.c_oflag = 0;
tio.c_cflag = CS8 | CREAD | CLOCAL;
tio.c_cflag &= (~CRTSCTS);
tio.c_lflag = 0;
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 0;
if (cfsetospeed(&tio, B115200) < 0 || cfsetispeed(&tio, B115200) < 0)
{
perror("cfseti/ospeed");
exit(EXIT_FAILURE);
}
ret = tcsetattr(ttyfd, TCSANOW, &tio);
if (ret == -1)
{
perror("tcsetattr");
exit(EXIT_FAILURE);
}
tty_changed = 1;
struct termios outio;
ret = tcgetattr(STDIN_FILENO, &outio);
if (ret == -1)
{
perror("tcgetattr");
exit(EXIT_FAILURE);
}
memcpy(&stdout_tio, &outio, sizeof(struct termios));
stdout_changed = 1;
outio.c_lflag &= ~ECHO;
ret = tcsetattr(STDIN_FILENO, TCSANOW, &outio);
int flags = fcntl(STDIN_FILENO, F_GETFL, 0);
fcntl(STDIN_FILENO, F_SETFL, flags | O_NONBLOCK);
struct pollfd fds[] = {
{STDIN_FILENO, POLLIN, 0},
{ttyfd, POLLIN, 0}
};
while (1)
{
ret = poll(fds, sizeof(fds)/sizeof(struct pollfd), 0);
if (ret == -1)
{
perror("poll");
exit(EXIT_FAILURE);
}
if (fds[0].revents & POLLIN)
{
memset(readbuf, 0, sizeof(readbuf));
ret = read(fds[0].fd, readbuf, sizeof(readbuf));
if (ret < 0 && errno != EAGAIN)
{
perror("read");
exit(EXIT_FAILURE);
}
if (ret > 0)
{
strcpy(readbuf+ret-1, "\r\n");
// printf("%s", readbuf);
ret = write(ttyfd, readbuf, strlen(readbuf));
if (ret < 0)
{
perror("write");
exit(EXIT_FAILURE);
}
}
}
if (fds[1].revents & POLLIN)
{
memset(readbuf, 0, sizeof(readbuf));
ret = read(fds[1].fd, readbuf, sizeof(readbuf));
if (ret == -1 && errno != EAGAIN)
{
perror("read");
exit(EXIT_FAILURE);
}
printf("%s", readbuf);
}
}
int commandLen = strlen(atCommand);
char *buf = (char *)malloc(commandLen + 3);
sprintf(buf, "%s\r\n", atCommand);
ret = write(ttyfd, buf, strlen(buf));
if (ret < 0)
{
perror("write");
exit(EXIT_FAILURE);
}
free(buf);
while (1)
{
ret = read(ttyfd, readbuf, sizeof(readbuf));
if (ret < 0 && errno != EAGAIN)
{
perror("read");
exit(EXIT_FAILURE);
}
if (ret > 0)
write(1, readbuf, ret);
}
return 0;
}ppp拨号上网配置
ppp内核驱动配置
Symbol: PPP [=y] Type : tristate Defined at drivers/net/ppp/Kconfig:6 Prompt: PPP (point-to-point protocol) support Depends on: NETDEVICES [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) Selects: SLHC [=y] Selected by [n]: - IPWIRELESS [=n] && PCMCIA [=n] && NETDEVICES [=y] && TTY [=y]
Symbol: PPP_DEFLATE [=y] Type : tristate Defined at drivers/net/ppp/Kconfig:57 Prompt: PPP Deflate compression Depends on: NETDEVICES [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y]) Selects: ZLIB_INFLATE [=y] && ZLIB_DEFLATE [=y]
Symbol: PPP_FILTER [=y] Type : bool Defined at drivers/net/ppp/Kconfig:72 Prompt: PPP filtering Depends on: NETDEVICES [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y])
Symbol: PPP_MPPE [=y] Type : tristate Defined at drivers/net/ppp/Kconfig:85 Prompt: PPP MPPE compression (encryption) Depends on: NETDEVICES [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y]) Selects: CRYPTO [=y] && CRYPTO_SHA1 [=y] && CRYPTO_LIB_ARC4 [=y]
Symbol: PPP_MULTILINK [=y] Type : bool Defined at drivers/net/ppp/Kconfig:98 Prompt: PPP multilink support Depends on: NETDEVICES [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y])
Symbol: PPPOE [=y] Type : tristate Defined at drivers/net/ppp/Kconfig:120 Prompt: PPP over Ethernet Depends on: NETDEVICES [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y])
Symbol: PPP_ASYNC [=y] Type : tristate Defined at drivers/net/ppp/Kconfig:152 Prompt: PPP support for async serial ports Depends on: NETDEVICES [=y] && TTY [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y]) Selects: CRC_CCITT [=y]
Symbol: PPP_SYNC_TTY [=y] Type : tristate Defined at drivers/net/ppp/Kconfig:166 Prompt: PPP support for sync tty ports Depends on: NETDEVICES [=y] && TTY [=y] && PPP [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> PPP (point-to-point protocol) support (PPP [=y])
文件系统pppd配置
Symbol: BR2_PACKAGE_PPPD [=y] Type : bool Prompt: pppd Location: -> Target packages -> Networking applications Defined at package/pppd/Config.in:1 Depends on: !BR2_STATIC_LIBS [=n] && !BR2_TOOLCHAIN_USES_MUSL [=n] && BR2_USE_MMU [=y] Selects: BR2_PACKAGE_OPENSSL [=y] Selected by [n]: - BR2_PACKAGE_RP_PPPOE [=n] && !BR2_STATIC_LIBS [=n] && !BR2_TOOLCHAIN_USES_MUSL [=n]\ && BR2_USE_MMU [=y] - BR2_PACKAGE_NETWORK_MANAGER_PPPD [=n] && BR2_PACKAGE_NETWORK_MANAGER [=n] && !\ BR2_TOOLCHAIN_USES_MUSL [=n]
Symbol: BR2_PACKAGE_PPPD_FILTER [=y] Type : bool Prompt: filtering Location: -> Target packages -> Networking applications -> pppd (BR2_PACKAGE_PPPD [=y]) Defined at package/pppd/Config.in:14 Depends on: BR2_PACKAGE_PPPD [=y] Selects: BR2_PACKAGE_LIBPCAP [=n]