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improved default handling of clock_div and databit length

This commit is contained in:
devsaurus 2015-10-18 11:37:17 +02:00
parent 26f4bc7957
commit a6eb5ccb80
1 changed files with 4 additions and 2 deletions
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6
app/modules/spi.c
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@ -38,7 +38,8 @@ static int spi_setup( lua_State *L )
}
if (clock_div < 4) {
return luaL_error( L, "invalid clock divider" );
// defaulting to 8
clock_div = 8;
}
spi_databits[id] = databits;
@ -260,6 +261,7 @@ const LUA_REG_TYPE spi_map[] =
{ LSTRKEY( "CPHA_HIGH" ), LNUMVAL( PLATFORM_SPI_CPHA_HIGH) },
{ LSTRKEY( "CPOL_LOW" ), LNUMVAL( PLATFORM_SPI_CPOL_LOW) },
{ LSTRKEY( "CPOL_HIGH" ), LNUMVAL( PLATFORM_SPI_CPOL_HIGH) },
{ LSTRKEY( "DATABITS_8" ), LNUMVAL( 8 ) },
#endif // #if LUA_OPTIMIZE_MEMORY > 0
{ LNILKEY, LNILVAL }
};
@ -278,8 +280,8 @@ LUALIB_API int luaopen_spi( lua_State *L )
MOD_REG_NUMBER( L, "CPHA_HIGH", PLATFORM_SPI_CPHA_HIGH);
MOD_REG_NUMBER( L, "CPOL_LOW" , PLATFORM_SPI_CPOL_LOW);
MOD_REG_NUMBER( L, "CPOL_HIGH", PLATFORM_SPI_CPOL_HIGH);
MOD_REG_NUMBER( L, "DATABITS_8", 8 );
return 1;
#endif // #if LUA_OPTIMIZE_MEMORY > 0
}