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ssd1308: writeChar(), setAddressingMode() should return a value

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defect #373, 374

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Jon Trulson 2015-06-10 15:47:41 -06:00 committed by Mihai Tudor Panu
parent b36eb487eb
commit eb2ff59fe5
1 changed files with 8 additions and 3 deletions
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11
src/lcd/ssd1308.cxx
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@ -128,13 +128,16 @@ SSD1308::home()
mraa_result_t mraa_result_t
SSD1308::writeChar(uint8_t value) SSD1308::writeChar(uint8_t value)
{ {
mraa_result_t rv;
if (value < 0x20 || value > 0x7F) { if (value < 0x20 || value > 0x7F) {
value = 0x20; // space value = 0x20; // space
} }
for (uint8_t idx = 0; idx < 8; idx++) { for (uint8_t idx = 0; idx < 8; idx++) {
m_i2c_lcd_control.writeReg(LCD_DATA, BasicFont[value - 32][idx]); rv = m_i2c_lcd_control.writeReg(LCD_DATA, BasicFont[value - 32][idx]);
} }
return rv;
} }
mraa_result_t mraa_result_t
@ -148,6 +151,8 @@ SSD1308::setNormalDisplay()
mraa_result_t mraa_result_t
SSD1308::setAddressingMode(displayAddressingMode mode) SSD1308::setAddressingMode(displayAddressingMode mode)
{ {
m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_MEM_ADDR_MODE); // set addressing mode mraa_result_t rv;
m_i2c_lcd_control.writeReg(LCD_CMD, mode); // set page addressing mode rv =m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_MEM_ADDR_MODE); // set addressing mode
rv =m_i2c_lcd_control.writeReg(LCD_CMD, mode); // set page addressing mode
return rv;
} }