STM: add LCD functions for pixel access; add RNG Py bindings.

1 files changed, 2 insertions, 0 deletions

diff --git a/stm/mpyconfig.h b/stm/mpyconfig.h
index 06a4bd8e0..3fa3ac652 100644
--- a/stm/mpyconfig.h
+++ b/stm/mpyconfig.h
@@ -14,3 +14,5 @@ typedef int32_t machine_int_t; // must be pointer size
 typedef uint32_t machine_uint_t; // must be pointer size
 typedef void *machine_ptr_t; // must be of pointer size
 typedef float machine_float_t;
+
+machine_float_t machine_sqrt(machine_float_t x);