From d2d0c35b04ece686dcd3553173986249ff9f2b3b Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sun, 12 Sep 2021 23:54:09 +0200
Subject: remove float since integer division precise enough

---
 table-fan/Makefile    |  1 -
 table-fan/table-fan.c | 12 +++++-------
 2 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/table-fan/Makefile b/table-fan/Makefile
index 85f972c..c41073f 100644
--- a/table-fan/Makefile
+++ b/table-fan/Makefile
@@ -26,7 +26,6 @@ OBJ := $(NAME).o
 LIBS := util led lufa-descriptor-usbserial usbio
 EXTERNAL_LIBS := lufa
 SPREADAVR_PATH := ../contrib/avr-utils
-PRINTF_HAS_FLOAT := 1
 RESET_FUNC := $(SPREADAVR_PATH)/tools/reset_lufa_cdc
 RESET_PARAM := 'r'
 
diff --git a/table-fan/table-fan.c b/table-fan/table-fan.c
index 0a49c91..6580b26 100644
--- a/table-fan/table-fan.c
+++ b/table-fan/table-fan.c
@@ -91,20 +91,18 @@ ISR(TIMER1_CAPT_vect)
   }
   tacho_last_ts = current;
 
-  float rpm = 1875000.0 / (float)diff ;
-  printf("\rtacho: %8.2f rpm", rpm);
+  uint16_t rpm = 1875000 / diff;
+  printf("\rspeed: %6d rpm", rpm);
 }
 
 
 void handle_cmd(uint8_t cmd)
 {
   switch(cmd) {
-  case '0': led_off(); printf("ok\r\n"); break;
-  case '1': led_on(); printf("ok\r\n"); break;
-  case '+': pwm_inc(); printf("pwm = %d\r\n", PWM_VAL);  break;
-  case '-': pwm_dec(); printf("pwm = %d\r\n", PWM_VAL); break;
+  case '+': pwm_inc(); break; // printf("pwm = %d\r\n", PWM_VAL);  break;
+  case '-': pwm_dec(); break; // printf("pwm = %d\r\n", PWM_VAL); break;
   case 'r': reset2bootloader(); break;
-  default: printf("error\r\n"); return;
+  default: return; // printf("error\r\n"); return;
   }
 
 }
-- 
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