两个CC3200模块之间对传数据
我想做两个CC3200模块之间对传音频数据,不经过路由器,模块和模块之间能够直接通过wifi连接,这样一般用什么方式做比较好?有人做过吗?麻烦指点下 谢谢 QQ:709733624 微信:li709733624 麻烦有知道的大哥联系我下,谢谢
TI有一个连接路由器的CC3200到CC3200的音频传输例程(wifi_audio_app),你可以将这个例程修改为CC3200不经过路由器直接进行直连的方式
我做了一些笔记参考如下,
//By default example come up in loopback mode means it will read data on MIC and playback to speaker.
//Verify whether device coming up with loopback mode or not for further debugging. For loopback test use only one LP at a time.
//发射板的 SW3 键
//接收板的 SW2 键
//Now follow below sequence once both the LP acquired the IP:
//1. Ensure Line-IN and Line-OUT points are connected appropriately on both the launch pads.
//2. Upon successful connection to AP, press SW2 on LP1. Red LED will switch off on LP1.
//3. Once LP1 connects to LP2, the red LED on LP2 will switch off.
//4. Now press SW2 on LP2 and SW3 on LP1. Red LED will switch on LP2.
//The demo in the SDK does support simultaneous bi-directional (full duplex) audio. This is achieved by exercising the
//two parallel paths (as described below) for the audio-in and audio-out paths.
//
//Audio-in jack -> 3200 McASP Data pin 1 -> I2S serializer 1 -> Audio Tx Task -> Audio transmit socket --- Over the air
// |
// V
//Audio-out jack <- 3200 McASP Data pin 0 <- I2S serializer 0 <- Audio Rx Task <- Audio receive socket --- Over the air
//
//Each of the paths are simplex individually but together it achieves the full duplex audio transfer.
//------------------------run in 44.1kHz or 48kHz instead of 16kHz (default)--------------------
//You need to make following changes for 44.1/48 KHz 16-bit stereo PCM:
//
//1. Add below code lines in AudioCodecConfig() after “if(bitClk == 512000)”
//
//else if(bitClk == 1536000 || bitClk == 1411200)
//{
//AudioCodecPageSelect(TI3254_PAGE_0);
//
//AudioCodecRegWrite(TI3254_CLK_MUX_REG, 0x03); // PLL Clock is CODEC_CLKIN
//AudioCodecRegWrite(TI3254_CLK_PLL_P_R_REG, 0x91); // PLL is powered up, P=1, R=1
//AudioCodecRegWrite(TI3254_CLK_PLL_J_REG, 0x38); // J=56
//AudioCodecRegWrite(TI3254_CLK_PLL_D_MSB_REG, 0x00); // D = 0
//
//AudioCodecRegWrite(TI3254_CLK_NDAC_REG, 0x82); // NDAC divider powered up, NDAC = 2
//AudioCodecRegWrite(TI3254_CLK_MDAC_REG, 0x87); // MDAC divider powered up, MDAC = 7
//AudioCodecRegWrite(TI3254_DAC_OSR_MSB_REG, 0x00); // DOSR = 0x0080 =
//AudioCodecRegWrite(TI3254_DAC_OSR_LSB_REG, 0x80); // DOSR = 0x0080 = 128
//
//AudioCodecRegWrite(TI3254_CLK_NADC_REG, 0x82); // NADC divider powered up, NADC = 2
//AudioCodecRegWrite(TI3254_CLK_MADC_REG, 0x87); // MADC divider powered up, MADC = 7
//AudioCodecRegWrite(TI3254_ADC_OSR_REG, 0x80); // AOSR = 128 ((Use with PRB_R1 to PRB_R6, ADC Filter Type A)
//}
//
//2. In AudioCaptureRendererConfigure() replace 512000 with 1411200 for 44.1KHZ and 1536000 for 48KHz
//
//3. In main.c pass 44100 or 48000 in place of 16000 as argument for AudioCodecConfig()
//4. In main.c pass 44100 or 48000 in place of 16000 as argument for AudioCaptureRendererConfigure()
//
//As don't have expertise on Audio codec, so it is best to post query in TI-Audio codec((AIC3254) ) forum to know how to configure PLL related configuration.
//特别注意:
//(3)mDNS使用服务器开启及客户端请求问题
// 详见(CC3200 WiFi Audio App) http://e2e.ti.com/support/wireless_connectivity/simplelink_wifi_cc31xx_cc32xx/f/968/t/438276
// 详见(How 2 CC3200s get each other IP address?) http://e2e.ti.com/support/wireless_connectivity/simplelink_wifi_cc31xx_cc32xx/f/968/p/400118/1415303#1415303
//(4)回放模式设置
// (Using Audio booster pack wifi demo app example CC3200) http://e2e.ti.com/support/wireless_connectivity/simplelink_wifi_cc31xx_cc32xx/f/968/t/390582#pi239031348=2&pi239031350=3
//(5)操作步骤
//<1>按下复位键(SW1)
//<2>按下发射板的 SW3 键,绿灯长亮
//<3>再按下接收板的 SW2 键,黄灯长亮,红灯也长亮
//此时发射板的红灯及黄灯熄灭,绿灯常亮表示发射板正在传输音频,接收板绿灯熄灭,黄灯及红灯常亮表示正在接收音频
//(6)关于双向音频流控制
//(does the wifi audio sample really running on bidirectional?) http://e2e.ti.com/support/wireless_connectivity/simplelink_wifi_cc31xx_cc32xx/f/968/t/402341
// 在(5)基础上
// <4>再按下发射板的SW2键,此时绿灯和黄灯亮
// <5>再按下接收板的SW3键,此时绿灯,黄灯和红灯都亮,而且之前的发射板的三个灯也全亮。---双向语音设置成功!
//(7)注意在手机播放音频信号,用CC3200无线接收播放会有"叭叭叭"的杂音,是由于手机射频信号造成的!将手机设置为飞行模式再次播放杂音消除!
//(8)关于无线UDP数据量问题
// UDP每包发送1kBytes数据,16kHz采样率*16bit*2通道=64kBytes字节/s 每秒采集16k次=32k个高低电平,高低电平=左右声道,每个声道16bit数据表示,
// 则有每秒32k*2Bytes=64kBytes数据流!也就大约512kbps!如果采用44.1kHz则会产生大约1.5Mbps带宽
//(9)连接AP的方式采用直接连接的方式!
//操作步骤
//首先设置路由器:
#define SSID_NAME "CC32" /*cc3200demo AP SSID */
#define SECURITY_TYPE SL_SEC_TYPE_WPA_WPA2 /* SL_SEC_TYPE_OPEN Security type (OPEN or WEP or WPA*/
#define SECURITY_KEY "12345678"
//<1>按下复位键(SW1)
//<2>按下发射板的 SW3 键,绿灯长亮
//<3>再按下接收板的 SW2 键,黄灯长亮,红灯也长亮 ---单向语音设置成功!
//<4>再按下发射板的SW2键,此时绿灯和黄灯亮
//<5>再按下接收板的SW3键,此时绿灯,黄灯和红灯都亮,而且之前的发射板的三个灯也全亮。---双向语音设置成功!
// 通过板卡上的MIC和插入的耳机就也进行语音双向传输了
好 谢谢您
我按照您第9条的改了代码 两个连接起来是烧写到FLASH里面以后开机自动连接吗?还需要smatrconfig吗? 我烧写到flash以后两个板子的绿灯一直亮 应该没有连接上 是我还缺什么东西吗?
你需要通过Smartconfig首先连接到路由器上,或者直接修改代码,将Smartconfig的部分去掉,直接连接目标的路由器,然后通过步骤9进行连接操作