Dear Dialog support team,
我需要两个da14585来交换数据（不使用UART，即直接使用2DA14585 Exchange数据），因此我测试了DSP示例。
To get the data from peer device, I first tested "dsps_device_dma" project with an Android mobile phone .
I use "arch_printf"(It's enabled) as in the attached to output the data.
two tests(See the pic in the attached/both tests have the following problem):
1. gattc_write_req_ind_handler <@file sps_server_task.c>
2.user_sps_server_data_write_ind_handler <@file user_spss_task.c>
I met the following problem:
when connectted with mobile, "arch_printf" can't out put debug information at first connection, but if I disconnect,and connect again, then if I "send" information from mobile, I can get out put information from "arch_printf", and It's OK for 3rd and 4th connection to output debug info from "arch_printf".
所以我想问以下事项：
1.为什么在第一个连接中，我无法获取输出信息。
2. where is the best place/which function for me to get data? and if you can help to tell me the best way to get the data?
谢谢
Benjamin
嗨Benjamindu，
Could you please clarify what you would like to accomplish? You mentioned that you would like to exchange data between 2 DA1585 without uart, so both of them running the DSPS firmware (one of them is the host and the other the device). This is by default implemented in the DSPS reference design. After that you mentioned that you connected a mobile phone, so the device is connected with two hosts? Also, which application did you use? Did you download the DSPS mobile application? The DSPS prints the incoming data into a serial monitor. Apologies, but I am little bit confused with your description, so please try to explain in detail what you are trying to accomplish.
谢谢, PM_Dialog
Dear Dialog,
To make things easier, let me express in a simplified way.
我测试了“dsps_device_dma" project on one Da14585 (as device) and connect it with a mobile(I downloaded the DSPS mobile application)
当用移动设备连接时，“Arch_Printf”不能在第一次连接中介绍调试信息，但如果我断开连接，然后再次连接，那么如果我从移动设备中“发送”信息，我可以从“ARCH_PRINTF”中获取信息（设备侧面），第3和第4个连接可以从“Arch_printf”输出调试信息。
所以我想问以下事项：
1.为什么在第一个连接中，我无法获取输出信息。
2. where is the best place/which function for me to get data? and if you can help to tell me the best way to get the data?
谢谢
Benjamin
嗨Benjamindu，
Do you have the CFG_PRINTF (in da1458x_config_basic.h) defined? This definition enables serial interface logging mechanism. If CFG_PRINTF is defined CFG_PRINTF_UART2 controls the uart module used. If it is defined UART2 is used. If not, UART is used.uart or uart2 driver must be included in project respectively.
谢谢, PM_Dialog
Hi Dialog support team,
I have it defined, and I can get debug info with "arch_printf" at second connection and 3rd,4th...,
My problem is why I can NOT get info at FIRST connection after Da1458X is powered.
以下2个问题希望您可以帮助回答：
1.为什么在第一个连接中，我无法获取输出信息。
2. where is the best place/which function for me to get data? and if you can help to tell me the best way to get the data?
嗨Benjamindu，
Do you have the Pro-DK or a custom board? The arch_printf uses the UART2 and the DSPS application code by default uses the UART1. Please check the UART definitions in the user_periph_setup.h header file. If you are using the Pro-DK, the UART1 is directly connected to FTDI, so if you would like to have UART2, you have to connect to the FTDI the UART2. In more details, if you need to get printed additional debug information from UART2 (CFG_PRINTF is defined in da1458x_config_basic.h) then the pins 0.1 (TX) and 0.2(RX) exposed to connectors J5 of Pro DK’s respectively can be utilized by connecting a USB to Serial converter. I tested from my side and it is working as expected.
Modifications in Pro-DK
谢谢, PM_Dialog
我有合适的硬件connection, otherwise I can not get the information at second connection.
My problem is I can not get the infomation at first connection of device and host(my mobile) at FIRST connection after Da1458X is powered.
Can you get the info at first connection?
以下2个问题希望您可以帮助回答：
1. why at the FIRST connection, I can not get output info.
2. where is the best place/which function for me to get data? and if you can help to tell me the best way to get the data?
If the first question hard to answer, can you give me an answer of the second question?
嗨Benjamindu，
I am not able to replicates your issue. Could you please let me know if you have done any other modifications into the DSPS project? I used the code that you have attached but I can send the info that you would like to send. Also, could you please clarify a little bit more what you mean with the debug info?
谢谢, PM_Dialog