From 3a9ffdb4c5302ca5825819564f3b01f52ca32dd2 Mon Sep 17 00:00:00 2001
From: sergeyyarkov <serzh.yarkov@gmail.com>
Date: Fri, 14 Aug 2026 19:59:53 +0300
Subject: [PATCH] delay to interface

---
 pdsp188x.c     | 22 ++++++++++++----------
 pdsp188x.h     |  4 ++--
 port/avr/avr.c | 15 ++++++++++++++-
 3 files changed, 28 insertions(+), 13 deletions(-)

diff --git a/pdsp188x.c b/pdsp188x.c
index fcc2a34..49fbb8a 100644
--- a/pdsp188x.c
+++ b/pdsp188x.c
@@ -11,12 +11,12 @@ static void ClearAddrLine(uint8_t pin_mask) { driver->set_pins(PDSP188x_ADDR_LIN
 #define MemSelectControlWord() SetAddrLine(A4)
 #define MemSelectNone() ClearAddrLine(A3 | A4)
 #define SetAddrNone() ClearAddrLine(A0 | A1 | A2 | A3 | A4)
-#define FlashCycle()   \
-  do {                 \
-    ClearDataLine(WR); \
-    _delay_us(1);      \
-    SetDataLine(WR);   \
-    _delay_us(1);      \
+#define FlashCycle()     \
+  do {                   \
+    ClearDataLine(WR);   \
+    driver->delay_us(1); \
+    SetDataLine(WR);     \
+    driver->delay_us(1); \
   } while (0)
 
 uint8_t pos = 0;
@@ -37,14 +37,14 @@ void PDSP188x_SetBrightness(uint8_t level) {
   SetAddrLine(A4);
   driver->send_byte(level);
   FlashCycle();
-  _delay_us(5);
+  driver->delay_us(5);
 }
 
 void PDSP188x_SendChar(char c, uint8_t digit) {
   if (driver == NULL || driver->send_byte == NULL) return;
 
   driver->send_byte(c);
-  _delay_us(1);
+  driver->delay_us(1);
   MemSelectCharRAM();
 
   /* digit set */
@@ -52,10 +52,10 @@ void PDSP188x_SendChar(char c, uint8_t digit) {
   if (digit & 0x02) SetAddrLine(A1);
   if (digit & 0x04) SetAddrLine(A2);
 
-  _delay_us(1);
+  driver->delay_us(1);
   FlashCycle();
   SetAddrNone();
-  _delay_us(1);
+  driver->delay_us(1);
 }
 
 void PDSP188x_Clear(void) {
@@ -80,6 +80,8 @@ void PDSP188x_SendStr(char *str) {
 void PDSP188x_BlinkEn(uint8_t control) {
   uint8_t control_command = control ? 0x10 : 0;
 
+  if (driver == NULL || driver->send_byte == NULL) return;
+
   SetAddrNone();
   MemSelectControlWord();
   SetDataLine(FL);
diff --git a/pdsp188x.h b/pdsp188x.h
index c1d4c29..6d687fd 100644
--- a/pdsp188x.h
+++ b/pdsp188x.h
@@ -1,9 +1,7 @@
 #if !defined(_PDSP188x_H_)
 #  define _PDSP188x_H_
 
-#  include <avr/io.h>
 #  include <stdlib.h>
-#  include <util/delay.h>
 
 #  ifdef __AVR__
 
@@ -35,6 +33,8 @@ typedef struct {
   void (*send_byte)(uint8_t byte);
   void (*write_char)(char c, uint8_t pos);
   void (*set_pins)(uint8_t set_mask, uint8_t pin, uint8_t state);
+  void (*delay_ms)(uint8_t ms);
+  void (*delay_us)(uint8_t us);
 } PDSP188x_DriverInterface_t;
 
 #  define PDSP188x_BRIGHTNESS_LEVEL_100 0x00
diff --git a/port/avr/avr.c b/port/avr/avr.c
index 9b882bf..c4f0229 100644
--- a/port/avr/avr.c
+++ b/port/avr/avr.c
@@ -38,4 +38,17 @@ static void SendByte(uint8_t byte) {
   _delay_us(5);
 }
 
-const PDSP188x_DriverInterface_t PDSP188x_AVR_Driver = {.init = Init, .send_byte = SendByte, .set_pins = SetPins};
\ No newline at end of file
+static void DelayMS(uint8_t ms) {
+  while (ms--) {
+    _delay_ms(1);
+  }
+}
+
+static void DelayUS(uint8_t us) {
+  while (us--) {
+    _delay_us(1);
+  }
+}
+
+const PDSP188x_DriverInterface_t PDSP188x_AVR_Driver = {
+    .init = Init, .send_byte = SendByte, .set_pins = SetPins, .delay_ms = DelayMS, .delay_us = DelayUS};
\ No newline at end of file