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-rw-r--r--oled/ss_oled.c2
-rw-r--r--oled/ss_oled.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/oled/ss_oled.c b/oled/ss_oled.c
index 3375bde..ff40451 100644
--- a/oled/ss_oled.c
+++ b/oled/ss_oled.c
@@ -1460,7 +1460,7 @@ void oledSetTextWrap(SSOLED *pOLED, int bWrap)
// Draw a string of normal (8x8), small (6x8) or large (16x32) characters
// At the given col+row
//
-int oledWriteString(SSOLED *pOLED, int iScroll, int x, int y, char *szMsg, int iSize, int bInvert, int bRender)
+int oledWriteString(SSOLED *pOLED, int iScroll, int x, int y, const char *szMsg, int iSize, int bInvert, int bRender)
{
int i, iFontOff, iLen, iFontSkip;
unsigned char c, *s, ucTemp[40];
diff --git a/oled/ss_oled.h b/oled/ss_oled.h
index fe6f399..78b68d4 100644
--- a/oled/ss_oled.h
+++ b/oled/ss_oled.h
@@ -129,7 +129,7 @@ void oledSetTextWrap(SSOLED *pOLED, int bWrap);
//
// Returns 0 for success, -1 for invalid parameter
//
-int oledWriteString(SSOLED *pOLED, int iScrollX, int x, int y, char *szMsg, int iSize, int bInvert, int bRender);
+int oledWriteString(SSOLED *pOLED, int iScrollX, int x, int y, const char *szMsg, int iSize, int bInvert, int bRender);
//
// Fill the frame buffer with a byte pattern
// e.g. all off (0x00) or all on (0xff)