From 3b84959ee650235730d10283f5a5589dfb55eb9a Mon Sep 17 00:00:00 2001
From: cuu <gnubsd@me.com>
Date: Mon, 21 Apr 2025 15:46:18 +0800
Subject: [PATCH] Update picocalc_helloworld

battery info now has charging status flag
---
 Code/picocalc_helloworld/i2ckbd/i2ckbd.h |  2 ++
 Code/picocalc_helloworld/main.c          | 27 +++++++++++++++++-------
 2 files changed, 21 insertions(+), 8 deletions(-)

diff --git a/Code/picocalc_helloworld/i2ckbd/i2ckbd.h b/Code/picocalc_helloworld/i2ckbd/i2ckbd.h
index b9414f2..0a162b0 100644
--- a/Code/picocalc_helloworld/i2ckbd/i2ckbd.h
+++ b/Code/picocalc_helloworld/i2ckbd/i2ckbd.h
@@ -17,4 +17,6 @@ void init_i2c_kbd();
 int read_i2c_kbd();
 int read_battery();
 
+#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
+#define bitClear(value, bit) ((value) &= ~(1 << (bit)))
 #endif
\ No newline at end of file
diff --git a/Code/picocalc_helloworld/main.c b/Code/picocalc_helloworld/main.c
index f9f44c4..f2d2a76 100644
--- a/Code/picocalc_helloworld/main.c
+++ b/Code/picocalc_helloworld/main.c
@@ -202,9 +202,25 @@ void pwm_interrupt_handler() {
         //
     }
 }
+void test_battery(){
+    char buf[64];
+    int bat_pcnt = read_battery();
+    bat_pcnt = bat_pcnt>>8;
+    int bat_charging = bitRead(bat_pcnt,7);
+    bitClear(bat_pcnt,7);
+    sprintf(buf,"battery percent is %d\n",bat_pcnt);
+    printf("%s", buf);
+    lcd_print_string(buf);
+    if(bat_charging ==0 ){
+        sprintf(buf,"battery is not charging\n");
+    }else{
+        sprintf(buf,"battery is charging\n");
+    }
+    printf("%s", buf);
+    lcd_print_string(buf);
+}
 
 int main() {
-    char buf[64];
     set_sys_clock_khz(133000, true);
     stdio_init_all();
 
@@ -235,18 +251,13 @@ int main() {
     // otherwise we won't get working battery infos
 
     sleep_ms(2000);
-    int bat_pcnt = read_battery();
-
-    sprintf(buf,"battery percent is %d\n",bat_pcnt>>8);
-    printf(buf);
-    lcd_print_string(buf);
+    test_battery();
     while (1) {
-
         int c = lcd_getc(0);
         if(c != -1 && c > 0) {
             lcd_putc(0,c);
         }
-        sleep_ms(10);
+        sleep_ms(20);
     }
 }