I have recently started using an L138 EVM (SN 4711M0066) and find that it is very slow. When connecting to the on-board USB emulator for the DSP from CCS4 it takes 1 min 15s for the DSP wake complete mesage to appear. I am using the supplied GEL from the Win CE SD card and loading the test programs from the same. The console messages during the emulator connect sequence report core:300MHz, DDR:150Mhz so I assume that this is ok. printf() to the console seems to take about 1s per call.
More importantly application code also seems to run very slowly. The test_uart program seems to print out of the COM port with the correct 1s time between messages and the timer count values look OK for the stated 1us resolution, but when I use the timer to time some of my own code it is taking 18us to run a piece of code which the CCS C674x simulator profiler measured at 0.19us. A single floating point multiply of two local variables is taking 0.3 us!
Please help.
|