From 411d46531dfe117c973a9d03b6e01c3247fd8a5b Mon Sep 17 00:00:00 2001
From: true <true_git@truecontrol.org>
Date: Tue, 6 Aug 2024 00:56:30 -0700
Subject: [PATCH] fix prng_scale16() not actually scaling

wrong type. oops.
---
 firmware/user/src/ledprog_pep.c | 3 +--
 firmware/user/src/rand.c        | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/firmware/user/src/ledprog_pep.c b/firmware/user/src/ledprog_pep.c
index 742a241..7f7d3a1 100644
--- a/firmware/user/src/ledprog_pep.c
+++ b/firmware/user/src/ledprog_pep.c
@@ -418,8 +418,7 @@ static void pep_6_random(uint8_t tick)
     rand_flash_timeout--;
 
     if (!rand_timeout) {
-        rand_timeout = prng_scale16(20, 150);
-        rand_timeout <<= 7;
+        rand_timeout = prng_scale16(20*128, 150*128);
 
         rand_program = 6 * prng_get8();
         rand_program >>= 8;
diff --git a/firmware/user/src/rand.c b/firmware/user/src/rand.c
index a8082ba..8034cae 100644
--- a/firmware/user/src/rand.c
+++ b/firmware/user/src/rand.c
@@ -151,7 +151,7 @@ static uint32_t tinymt32_temper (tinymt32_t* s)
 
 uint16_t prng_scale16(uint16_t min, uint16_t max)
 {
-    uint16_t rnd;
+    uint32_t rnd;
 
     rnd = prng_get16();
     rnd *= (max - min);