circuitpython/stmhal/bufhelper.c

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#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "bufhelper.h"
void pyb_buf_get_for_send(mp_obj_t o, mp_buffer_info_t *bufinfo, byte *tmp_data) {
if (MP_OBJ_IS_INT(o)) {
tmp_data[0] = mp_obj_get_int(o);
bufinfo->buf = tmp_data;
bufinfo->len = 1;
bufinfo->typecode = 'B';
} else {
mp_get_buffer_raise(o, bufinfo, MP_BUFFER_READ);
}
}
mp_obj_t pyb_buf_get_for_recv(mp_obj_t o, mp_buffer_info_t *bufinfo) {
if (MP_OBJ_IS_INT(o)) {
// allocate a new bytearray of given length
bufinfo->len = mp_obj_get_int(o);
bufinfo->typecode = 'B';
return mp_obj_str_builder_start(&mp_type_bytes, bufinfo->len, (byte**)&bufinfo->buf);
} else {
// get the existing buffer
mp_get_buffer_raise(o, bufinfo, MP_BUFFER_WRITE);
return MP_OBJ_NULL;
}
}