def read_eeprom_seq(self, ep_num):
ret_data = []
i = 0
address = 0
add_write = (common.board_eeprom[ep_num]['at24cxx']['addr'] << 1) + 0
add_read = (common.board_eeprom[ep_num]['at24cxx']['addr'] << 1) + 1
pins = common.board_eeprom[ep_num]
common_func.ftdi_i2c_init(self.device, pins)
common_func.ftdi_i2c_start(self.device, pins)
common_func.ftdi_i2c_write(self.device, pins, add_write)
if common.board_eeprom[ep_num]['at24cxx']['type']:
common_func.ftdi_i2c_write(self.device, pins, address >> 8)
common_func.ftdi_i2c_write(self.device, pins, address & 0xFF)
else:
common_func.ftdi_i2c_write(self.device, pins, address)
common_func.ftdi_i2c_start(self.device, pins)
common_func.ftdi_i2c_write(self.device, pins, add_read)
while i < 10:
ret_data.append(common_func.ftdi_i2c_read(self.device, pins, 0))
i += 1
common_func.ftdi_i2c_stop(self.device, pins)
if ret_data[0][0] == 0:
ret_data.pop(0)
self.eeprom_info['CONFIG_FLAG'] = hex(
0x01) if hex(ret_data[0][0] & 0x0F) != hex(0xF) else hex(0x0)
self.eeprom_info['BOARD_ID'] = hex(((ret_data[0][0] & 0xFC) >> 2)
| ((ret_data[1][0] - 1) << 6))
self.eeprom_info['BOARD_REV'] = hex(ret_data[2][0])
self.eeprom_info['SOC_ID'] = hex(ret_data[3][0])
self.eeprom_info['SOC_REV'] = hex(ret_data[4][0])
self.eeprom_info['PMIC_ID'] = hex(ret_data[5][0])
self.eeprom_info['PMIC_REV'] = hex(ret_data[6][0])
self.eeprom_info['NBR_PWR_RAILS'] = hex(ret_data[7][0])
self.eeprom_info['BOARD_SN'] = hex(ret_data[8][0])
self.display_eeprom_info()
def write_eeprom_page_i2c(self, ep_num):
infos = []
address = 0
for info in self.file_info:
if info[0] == 'BOARD_ID':
info[4] = int(info[4], 16)
data1 = info[4] << 2 if info[4] <= 40 else (
info[4] << 2) & 0xFF
data1 |= 0x01
data2 = 1 if info[4] <= 40 else ((
(info[4] << 2) & 0xFF00) >> 8) + 1
infos.append(data1)
infos.append(data2)
else:
data = int(info[4], 16)
infos.append(data)
add_write = (common.board_eeprom[ep_num]['at24cxx']['addr'] << 1) + 0
pins = common.board_eeprom[ep_num]
common_func.ftdi_i2c_init(self.device, pins)
common_func.ftdi_i2c_start(self.device, pins)
common_func.ftdi_i2c_write(self.device, pins, add_write)
if common.board_eeprom[ep_num]['at24cxx']['type']:
common_func.ftdi_i2c_write(self.device, pins, address >> 8)
common_func.ftdi_i2c_write(self.device, pins, address & 0xFF)
else:
common_func.ftdi_i2c_write(self.device, pins, address)
for ind in range(0, len(infos) - 1):
common_func.ftdi_i2c_write(self.device, pins, infos[ind])
common_func.ftdi_i2c_stop(self.device, pins)
common_func.time.sleep(0.3)
self.write_eeprom_i2c(8, infos[-1], ep_num)
def get_temperature(self, pins):
out = []
add_read = (pins['sensor'][0] << 1) + 1
common_func.ftdi_i2c_init(self.ftdic, pins)
common_func.ftdi_i2c_start(self.ftdic, pins)
common_func.ftdi_i2c_write(self.ftdic, pins, add_read)
out = common_func.ftdi_i2c_read_buffer(self.ftdic, pins, 2)
common_func.ftdi_i2c_stop(self.ftdic, pins)
return out
def get_eeprom_board(self, pins, board_id):
"""checks if the eeprom is present on the current board"""
self.ftdic = common_func.ftdi_open(board_id, 1)
common_func.ftdic_setbitmode(self.ftdic, 0x0, 0x00)
common_func.ftdic_setbitmode(self.ftdic, 0x0, 0x02)
common_func.ftdi_i2c_init(self.ftdic, pins)
add_write = (pins['at24cxx'][0] << 1) + 0
common_func.ftdi_i2c_start(self.ftdic, pins)
if common_func.ftdi_i2c_write(self.ftdic, pins, add_write):
common_func.ftdi_i2c_stop(self.ftdic, pins)
self.ftdic.close()
return 1
else:
common_func.ftdi_i2c_stop(self.ftdic, pins)
self.ftdic.close()
return 0
def init_system(self, pins):
"""initialization of the FTDI chip"""
mode = 1 if pins in self.board_mapping_gpio_i2c or pins in self.board_mapping_power else 0
channel = pins['ftdi'][0]
out_pins = 0
logging.info('FTDI Initialization...')
self.ftdic = common_func.ftdi_open(self.id, channel)
if mode == 0: # if GPIO mode
for gpio in self.board_mapping_gpio: # if channel 0, parse gpio default value of channel 0
if gpio['ftdi'][0] == channel:
out_pins += gpio['ftdi'][1]
common_func.ftdic_setbitmode(0xFF, 0x1)
if mode == 1: # if I2C mode
common_func.ftdic_setbitmode(self.ftdic, 0x0, 0x00) # reset the controller
common_func.ftdic_setbitmode(self.ftdic, 0x0, 0x02) # set as MPSSE
common_func.ftdi_i2c_init(self.ftdic, pins) # Init FT4232H MPSSE with correct parameters
logging.info('Done.')
def read_eeprom_i2c(self, pins):
out = []
add_write = (pins['at24cxx']['addr'] << 1) + 0
add_read = (pins['at24cxx']['addr'] << 1) + 1
common_func.ftdi_i2c_init(self.device, pins)
common_func.ftdi_i2c_start(self.device, pins)
common_func.ftdi_i2c_write(self.device, pins, add_write)
if pins['at24cxx']['type']:
common_func.ftdi_i2c_write(self.device, pins, 0 >> 8)
common_func.ftdi_i2c_write(self.device, pins, 0 & 0xFF)
else:
common_func.ftdi_i2c_write(self.device, pins, 0)
common_func.ftdi_i2c_start(self.device, pins)
common_func.ftdi_i2c_write(self.device, pins, add_read)
for i in range(2):
out.append(common_func.ftdi_i2c_read(self.device, pins, 0))
out.append(common_func.ftdi_i2c_read(self.device, pins, 1))
common_func.ftdi_i2c_stop(self.device, pins)
return out