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Update SSD1306Ascii.cpp

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Fix handling of clear screen for the nanoEvery and nanoWifi.
This commit is contained in:
Neil McKechnie 2021-04-13 23:13:27 +01:00
parent b8b9b6d354
commit c4f45ddc36
1 changed files with 3 additions and 3 deletions
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6
SSD1306Ascii.cpp
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@ -21,9 +21,9 @@
// Maximum number of bytes we can send per transmission is 32.
const uint8_t FLASH SSD1306AsciiWire::blankPixels[32] =
const uint8_t SSD1306AsciiWire::blankPixels[16] =
{0x40, // First byte specifies data mode
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
//==============================================================================
// SSD1306AsciiWire Method Definitions
@ -41,7 +41,7 @@ void SSD1306AsciiWire::clear(uint8_t columnStart, uint8_t columnEnd,
setCursor(columnStart, r); // Position at start of row to be erased
for (uint8_t c = columnStart; c <= columnEnd; c += maxBytes-1) {
uint8_t len = min((uint8_t)(columnEnd-c+1), maxBytes-1) + 1;
I2CManager.write_P(m_i2cAddr, blankPixels, len); // Write up to 31 blank columns
I2CManager.write(m_i2cAddr, blankPixels, len); // Write up to 15 blank columns
}
}
}