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align spi_recv to platform_spi_send_recv

This commit is contained in:
devsaurus 2015-10-26 22:39:33 +01:00
parent 7d77398921
commit d46bc5cc1f
1 changed files with 3 additions and 5 deletions
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8
app/modules/spi.c
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@ -173,11 +173,12 @@ static int spi_send_recv( lua_State *L )
return spi_generic_send_recv( L, 1 );
}
// Lua: read = spi.recv( id, size )
// Lua: read = spi.recv( id, size, [default data] )
static int spi_recv( lua_State *L )
{
int id = luaL_checkinteger( L, 1 );
int size = luaL_checkinteger( L, 2 ), i;
int def = luaL_optinteger( L, 3, 0xffffffff );
luaL_Buffer b;
@ -189,10 +190,7 @@ static int spi_recv( lua_State *L )
luaL_buffinit( L, &b );
for (i=0; i<size; i++)
{
if (PLATFORM_OK != platform_spi_transaction( id, 0, 0, 0, 0, 0, 0, spi_databits[id] )) {
return luaL_error( L, "failed" );
}
luaL_addchar( &b, ( char )platform_spi_get_miso( id, 0, spi_databits[id] ) );
luaL_addchar( &b, ( char )platform_spi_send_recv( id, spi_databits[id], def ) );
}
luaL_pushresult( &b );