From 8415451be0ed291deb0a7aca50488a9e85443e67 Mon Sep 17 00:00:00 2001
From: Tester23 <openshwprojects@gmail.com>
Date: Sat, 28 Oct 2023 12:02:44 +0200
Subject: [PATCH] PT6523 SPI send demo (software)

---
 src/driver/drv_pt6523.c | 50 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/src/driver/drv_pt6523.c b/src/driver/drv_pt6523.c
index fa7d60414..b26999170 100644
--- a/src/driver/drv_pt6523.c
+++ b/src/driver/drv_pt6523.c
@@ -15,14 +15,64 @@ byte pt_inh = 10;
 byte pt_ce = 11;
 byte pt_clk = 24;
 byte pt_di = 8;
+byte g_screen[15];
+byte g_symbols[5];
+byte g_address = 130;
+
+void PT6523_shiftOut(byte *data, int totalBytes) {
+	for (int j = 0; j < totalBytes; j++) {
+		byte val = data[j];
+		for (int i = 0; i < 8; i++) {
+			//if (bitOrder == LSBFIRST)
+			//HAL_PIN_SetOutputValue(pt_di, !!(val & (1 << i)));
+			//else
+			HAL_PIN_SetOutputValue(pt_di, !!(val & (1 << ((8 - 1) - i))));
+
+			HAL_PIN_SetOutputValue(pt_clk, 1);
+			HAL_PIN_SetOutputValue(pt_clk, 0);
+		}
+	}
+}
+
+void PT6523_Print() {
+	HAL_PIN_SetOutputValue(pt_ce, 0);
+	// Address Data (A1- A8)
+	PT6523_shiftOut(&g_address,1);
+	HAL_PIN_SetOutputValue(pt_ce, 1);
+
+	// Character Segment Data (D1- D120) 15 Byte
+	PT6523_shiftOut(g_screen, sizeof(g_screen));
+
+	// Symbol Segment Data (D121 - D156 & DR, SC, BU, X) 5 Byte
+	PT6523_shiftOut(g_symbols, sizeof(g_symbols));
+
+	HAL_PIN_SetOutputValue(pt_ce, 0);
+}
 
 void PT6523_Init()
 {
+	HAL_PIN_Setup_Output(pt_inh);
+	HAL_PIN_SetOutputValue(pt_inh, 1);
+	HAL_PIN_Setup_Output(pt_ce);
+	HAL_PIN_SetOutputValue(pt_ce, 0);
+	HAL_PIN_Setup_Output(pt_clk);
+	HAL_PIN_SetOutputValue(pt_clk, 0);
+	HAL_PIN_Setup_Output(pt_di);
+	HAL_PIN_SetOutputValue(pt_di, 0);
 }
 
 
 void PT6523_RunFrame()
 {
+	for (int i = 0; i < sizeof(g_screen); i++) {
+		g_screen[i] = rand();
+	}
+	for (int i = 0; i < sizeof(g_symbols); i++) {
+		// Can't do rand() here, neither ff, because it turns off the display sometimes
+		// Maybe there is some specal turn-off bit here?
+		g_symbols[i] = 0x0;// ff;// rand();
+	}
+	PT6523_Print();
 }