Lord-Lucan
commented
5 years ago Not sure what your display device is but that snprintf format is not correct. Looking at the rmc structure we have ....
struct minmea_time { int hours; int minutes; int seconds; int microseconds; };
struct minmea_sentence_rmc { struct minmea_time time;
So the time is a structure, so you're either going to have to write some code to convert those hours,minutes,seconds,microsecnods to the string you want or at a pinch, this might work ...
snprintf(buffer4,sizeof(buffer4),"RMCTime: %d:%d:%d:%d",gpsInfo->rmc.time.hours,gpsInfo->rmc.time.minutes,gpsInfo->rmc.time.seconds,gpsInfo->rmc.time.microseconds);
At the moment the format character you have %c is a single character, probably not what you want. %d is the format character for an integer. So the time fields should be interpreted as integers.
Johhnzero
1. SDK version（SDK 版本）
{
}
2. In what kind of operation problems appear, and how to reproduce the problem ?（什么样的操作步骤问题会出现，是否是稳定复现，如何复现问题？）
{ I am trying to extract the time and date from the RMC sentence that is being received by the GPS receiver. I am using a slightly modified version of the GPS demo provided in GPRS_SDK_C. The data is being properly recorded on the TF card as follows once GPS lock has been achieved, as shown in the following line:
$GNRMC,091835.000,A,2804.6123,N,08035.0009,W,1.828,204.06,110419,,,A*54
However when I try to display the time on an OLED display, I am getting RMCTime displayed as 9 instead of the expected value of 091835.000 . I am using the following code to try and do this;
snprintf(buffer4,sizeof(buffer4),"RMCTime: %c",gpsInfo->rmc.time); OLED_ShowStr(5,7,buffer4,1);
I am by no means an experienced programmer, so I am asking for some help with this request. Thank you.
}