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i2clcd: improve error handling in the I2CLcd and Jhd1313m1 classes

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Signed-off-by: Wouter van Verre <wouter.van.verre@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Wouter van Verre
2015-04-09 17:38:29 +01:00
committed by Mihai Tudor Panu
parent dea82728af
commit 67bd592ed9
2 changed files with 65 additions and 35 deletions
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23
src/lcd/i2clcd.cxx
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@ -26,6 +26,7 @@
#include <unistd.h>
#include "i2clcd.h"
#include "i2clcd_private.h"
using namespace upm;
@ -79,25 +80,29 @@ I2CLcd::name()
mraa_result_t
I2CLcd::i2cReg(mraa_i2c_context ctx, int deviceAdress, int addr, uint8_t value)
{
mraa_result_t error = MRAA_SUCCESS;
mraa_result_t ret;
uint8_t data[2] = { addr, value };
error = mraa_i2c_address(ctx, deviceAdress);
error = mraa_i2c_write(ctx, data, 2);
ret = mraa_i2c_address(ctx, deviceAdress);
UPM_GOTO_ON_MRAA_FAIL(ret, beach);
ret = mraa_i2c_write(ctx, data, 2);
return error;
beach:
return ret;
}
mraa_result_t
I2CLcd::i2Cmd(mraa_i2c_context ctx, uint8_t value)
{
mraa_result_t error = MRAA_SUCCESS;
mraa_result_t ret;
uint8_t data[2] = { LCD_CMD, value };
error = mraa_i2c_address(ctx, m_lcd_control_address);
error = mraa_i2c_write(ctx, data, 2);
return error;
ret = mraa_i2c_address(ctx, m_lcd_control_address);
UPM_GOTO_ON_MRAA_FAIL(ret, beach);
ret = mraa_i2c_write(ctx, data, 2);
beach:
return ret;
}
mraa_result_t