From: Tobias Girstmair <tobi@isticktoit.net>
Date: Wed, 28 Apr 2021 07:24:27 +0000 (+0200)
Subject: better way to skip calibration when programming same chip multiple times
X-Git-Url: https://git.gir.st/Chiptunes-pms150c.git/commitdiff_plain/8410984af39f568560a0ee2e0a7cfadf3ae1bda3

better way to skip calibration when programming same chip multiple times
---

diff --git a/bsv.asm b/bsv.asm
index b6fed82..f7bb7ff 100644
--- a/bsv.asm
+++ b/bsv.asm
@@ -50,6 +50,7 @@ ihrcr = 0x0B
 ; 512 cycles (the next power of two above the 495 cycles the program needs for
 ; execution), this gives us a clock speed of 512 * 8khz = 4.096MHz. The MCU
 ; will be powered by a 3V lithium coin cell.
+do_calib = 1
 calib_freq = 4096000 ; Hz
 calib_vdd  = 3000 ; mV
 
@@ -204,8 +205,8 @@ init:
 	MOV	a, #active_clock
 	MOV	clkmd, a	; switch to IHRC
 
-	.org 0x106 ; comment out on 2nd iteration
 	; calibration placeholder:
+	.if do_calib
 	AND	a, #'R'
 	AND	a, #'C'
 	AND	a, #1 ; IHRC
@@ -216,7 +217,10 @@ init:
 	AND	a, #( calib_vdd )
 	AND	a, #( calib_vdd>>8 )
 	AND	a, #ihrcr
-	.org 0x11a
+	.else
+	.word 0xffff, 0xffff, 0xffff, 0xffff, 0xffff
+	.word 0xffff, 0xffff, 0xffff, 0xffff, 0xffff
+	.endif
 
 	;stack setup:
 	MOV	a, #stack_start