mcp3911_write
return mcp3911_write(adc, reg, val, len);
ret = mcp3911_write(adc, MCP3910_OFFCAL(channel), val, 3);
ret = mcp3911_write(adc, MCP3911_OFFCAL(channel), val, 3);
ret = mcp3911_write(adc, MCP3911_REG_CONFIG, regval, 2);
ret = mcp3911_write(adc, MCP3911_REG_STATUSCOM, regval, 2);
return mcp3911_write(adc, MCP3911_REG_GAIN, regval, 1);
ret = mcp3911_write(adc, MCP3910_REG_CONFIG1, regval, 3);
ret = mcp3911_write(adc, MCP3910_REG_STATUSCOM, regval, 3);
ret = mcp3911_write(adc, MCP3910_REG_GAIN, regval, 3);