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Fix issue of sending each byte of iAP as a word. Write each thing that comes in as an 8 bit value. Need new in line asm to do this.

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This commit is contained in:
Russell Gallop
2011-08-17 14:57:41 +01:00
parent 2cd2348309
commit 4d355517c6
2 changed files with 3 additions and 2 deletions
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4
module_usb_aud_shared/usb_buffer/decouple.xc
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@@ -1257,8 +1257,8 @@ void decouple(chanend c_mix_out,
/* There is room in the collecting buffer for the data */ /* There is room in the collecting buffer for the data */
xc_ptr p = (iap_to_host_buffer_being_collected + 4) + iap_data_collected_from_device; xc_ptr p = (iap_to_host_buffer_being_collected + 4) + iap_data_collected_from_device;
// Add data to the buffer // Add data to the buffer
write_via_xc_ptr(p, datum_iap); write_byte_via_xc_ptr_indexed(p, 0, datum_iap);
iap_data_collected_from_device += 4; iap_data_collected_from_device += 1;
} }
else else
{ {

1
module_usb_aud_shared/usb_buffer/xc_ptr.h
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@@ -12,6 +12,7 @@ inline xc_ptr array_to_xc_ptr(unsigned a[]) {
#define write_via_xc_ptr(p,x) asm("stw %0, %1[0]"::"r"(x),"r"(p)) #define write_via_xc_ptr(p,x) asm("stw %0, %1[0]"::"r"(x),"r"(p))
#define write_via_xc_ptr_indexed(p,i,x) asm("stw %0, %1[%2]"::"r"(x),"r"(p),"r"(i)) #define write_via_xc_ptr_indexed(p,i,x) asm("stw %0, %1[%2]"::"r"(x),"r"(p),"r"(i))
#define write_byte_via_xc_ptr_indexed(p,i,x) asm("st8 %0, %1[%2]"::"r"(x),"r"(p),"r"(i))
#define read_via_xc_ptr(x,p) asm("ldw %0, %1[0]":"=r"(x):"r"(p)); #define read_via_xc_ptr(x,p) asm("ldw %0, %1[0]":"=r"(x):"r"(p));