Posted on February 02, 2015 at 00:12
I'm testing ST's USB Virtual COM Port example code(fromSTM32_USB-FS-Device_Lib_V4.0.0) on
STM32F103ZET6 board
，and the binary that is produced could not enumetate when compiling with
gcc(-O0 or -O2 or -O3).
if i compile with MDK
everything always works perfectly.
gcc compile another
example code such as led flicker will work fine.
who knows why?
CFLAGS = -O3 -g -Wall -I.\
-mcpu=cortex-m3 \
-mthumb \
-mfloat-abi=soft \
$(INCLUDES) -DUSE_STDPERIPH_DRIVER -DSTM32F10X_HD -DUSE_STM3210E_EVAL
sniffer by bushound
enumetate fail
DevicePhaseData Description Cmd.Phase.Ofs(rep)
---------------------------------------------------------------------
9.1IN 00 01 .. 1.1.0
9.0CTL a3 00 00 0008 00 04 00GET STATUS 2.1.0
9.0IN 01 01 01 00 .... 2.2.0
9.0CTL 23 01 10 0008 00 00 00CLEAR FEATURE 3.1.0
9.0CTL a3 00 00 0008 00 04 00GET STATUS 4.1.0
9.0IN 01 01 00 00 .... 4.2.0
9.0CTL 23 03 04 0008 00 00 00SET FEATURE 5.1.0(4)
9.1IN 00 01 .. 6.1.0(4)
9.0CTL a3 00 00 0008 00 04 00GET STATUS 7.1.0(4)
9.0IN 03 01 10 00 .... 7.2.0
9.0CTL 23 01 14 0008 00 00 00CLEAR FEATURE 8.1.0(4)
9.0CTL a3 00 00 0008 00 04 00GET STATUS 9.1.0(4)
9.0IN 03 01 00 00 .... 9.2.0
9.0CTL 23 01 01 0008 00 00 00CLEAR FEATURE 1.0
enumetate success
DevicePhaseData Description Cmd.Phase.Ofs(rep)
---------------------------------------------------------------------
9.1IN 00 01 .. 1.1.0
9.0CTL a3 00 00 0008 00 04 00GET STATUS 2.1.0
9.0IN 01 01 01 00 .... 2.2.0
9.0CTL 23 01 10 0008 00 00 00CLEAR FEATURE 3.1.0
9.0CTL a3 00 00 0008 00 04 00GET STATUS 4.1.0
9.0IN 01 01 00 00 .... 4.2.0
9.0CTL 23 03 04 0008 00 00 00SET FEATURE 5.1.0(2)
9.1IN 00 01 .. 6.1.0(2)
9.0CTL a3 00 00 0008 00 04 00GET STATUS 7.1.0(2)
9.0IN 03 01 10 00 .... 7.2.0
9.0CTL 23 01 14 0008 00 00 00CLEAR FEATURE 8.1.0(2)
9.0CTL a3 00 00 0008 00 04 00GET STATUS 9.1.0(3)
9.0IN 03 01 00 00 .... 9.2.0
9.0CTL 80 06 ee 0300 00 12 00GET DESCRIPTOR 1.0
9.0USTS c0000004 stall pid 2.0
9.0CTL 80 06 03 0309 04 ff 00GET DESCRIPTOR 1.0
9.0IN 1a 03 34 0038 00 45 00..4.8.E. 2.0
46 00 37 0036 00 35 00F.7.6.5. 2.8
43 00 33 0035 00 33 00C.3.5.3. 2.16
37 00 7. 2.24
9.0CTL 80 06 00 0300 00 ff 00GET DESCRIPTOR 1.0
9.0IN 04 03 09 04 .... 2.0
9.0CTL 80 06 02 0309 04 ff 00GET DESCRIPTOR 1.0
9.0IN 32 03 53 0054 00 4d S.T.M. 2.0
33 00 32 0020 00 56 2. .V. 2.8
69 00 72 0074 00 75 00i.r.t.u. 2.16
61 00 6c 0020 00 43 00a.l. .C. 2.24
9.0CTL 80 06 00 0600 00 0a 00GET DESCRIPTOR 1.0
9.0USTS c0000004 stall pid 2.0
