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change init to first invalidate, then init (maybe needed for some ptouch models?)

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This commit is contained in:
Dominic Radermacher 2022-09-11 06:29:44 +02:00
parent ffc1b1f7b1
commit 71396e8ff1
1 changed files with 5 additions and 1 deletions
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6
src/libptouch.c
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@ -186,7 +186,11 @@ int ptouch_send(ptouch_dev ptdev, uint8_t *data, size_t len)
int ptouch_init(ptouch_dev ptdev) int ptouch_init(ptouch_dev ptdev)
{ {
char cmd[]="\x1b\x40"; /* 1B 40 = ESC @ = INIT */ /* first invalidate, then send init command */
uint8_t cmd[102];
memset(cmd, 0, 100);
cmd[100] = 0x1b; /* ESC */
cmd[101] = 0x40; /* @ */
return ptouch_send(ptdev, (uint8_t *)cmd, strlen(cmd)); return ptouch_send(ptdev, (uint8_t *)cmd, strlen(cmd));
} }