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dummy read from serial before starting serial transfer

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This commit is contained in:
Zack Buhman 2023-12-02 13:33:40 +08:00
parent 37667a4dab
commit bc0b94b437
3 changed files with 20 additions and 1 deletions
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1
client.py
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@ -36,6 +36,7 @@ def do(ser, b):
ser.flush()
ser.flushInput()
ser.flushOutput()
_ = ser.read(ser.in_waiting)
ret = sync(ser, b'DATA')
print(ret)

3
common.mk
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@ -59,6 +59,9 @@ MAIN_OBJ = \
all: main.cdi
%.bin.o: %.bin
$(BUILD_BINARY_O)
%.o: %.obj
$(OBJCOPY) -g \
--rename-section IP=.text.$* \

17
vga.cpp
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@ -166,7 +166,22 @@ void vga()
v_sync_in();
holly.VO_BORDER_COL = (63 << 5) | (31 << 0);
holly.VO_CONTROL = 0x0016;
//holly.VO_CONTROL = 0x0016;
uint32_t hsync_pol = 0;
uint32_t vsync_pol = 0;
uint32_t blank_pol = 0;
uint32_t blank_video = 0;
uint32_t field_mode = 0;
uint32_t pixel_double = 0;
uint32_t pclk_delay = 0x16;
HOLLY.VO_CONTROL = 0
| (( pclk_delay & 0x3f) << 16 )
| (( pixel_double & 0x01) << 8 )
| (( field_mode & 0x0f) << 4 )
| (( blank_video & 0x01) << 3 )
| (( blank_pol & 0x01) << 2 )
| (( vsync_pol & 0x01) << 1 )
| (( hsync_pol & 0x01) << 0 );
holly.SOFTRESET = 0b000;
}