data of fstorage written data and reading back are not the same

[snowuyl]

I use nrf_fstorage_write() to write data to fstorage. And then I use nrf_fstorage_read() to read data. But data of fstorage written data and reading back are not the same.

Data written log messages is as follows.

0> <debug> app: addr=0x7D000, wlen=24
 0>
 0> <debug> app: pData w
 0>
 0> <debug> app: pData[0]=0xDE
 0>
 0> <debug> app: pData[1]=0xDD
 0>
 0> <debug> app: pData[2]=0x0
 0>
 0> <debug> app: pData[3]=0x0
 0>
 0> <debug> app: pData[4]=0x0
 0>
 0> <debug> app: pData[5]=0x0
 0>
 0> <debug> app: pData[6]=0x0
 0>
 0> <debug> app: pData[7]=0x0
 0>
 0> <debug> app: pData[8]=0x0
 0>
 0> <debug> app: pData[9]=0x0
 0>
 0> <debug> app: pData[10]=0x0
 0>
 0> <debug> app: pData[11]=0x0
 0>
 0> <debug> app: pData[12]=0x0
 0>
 0> <debug> app: pData[13]=0x0
 0>
 0> <debug> app: pData[14]=0x0
 0>
 0> <debug> app: pData[15]=0x0
 0>
 0> <debug> app: pData[16]=0x0
 0>
 0> <debug> app: pData[17]=0x0
 0>
 0> <debug> app: pData[18]=0x0
 0>
 0> <debug> app: pData[19]=0x0
 0>
 0> <debug> app: pData[20]=0x0
 0>
 0> <debug> app: pData[21]=0x0
 0>
 0> <debug> app: pData[22]=0x0
 0>
 0> <debug> app: pData[23]=0x0

Data reading log messages is as follows.

0> <debug> app: addr=0x7D000, len=24
 0>
 0> <debug> app: data r
 0>
 0> <debug> app: pData[0]=0x1C
 0>
 0> <debug> app: pData[1]=0x8A
 0>
 0> <debug> app: pData[2]=0x0
 0>
 0> <debug> app: pData[3]=0x20
 0>
 0> <debug> app: pData[4]=0xE9
 0>
 0> <debug> app: pData[5]=0xFF
 0>
 0> <debug> app: pData[6]=0xFF
 0>
 0> <debug> app: pData[7]=0xFF
 0>
 0> <debug> app: pData[8]=0x98
 0>
 0> <debug> app: pData[9]=0x2
 0>
 0> <debug> app: pData[10]=0x0
 0>
 0> <debug> app: pData[11]=0x0
 0>
 0> <debug> app: pData[12]=0x61
 0>
 0> <debug> app: pData[13]=0xD0
 0>
 0> <debug> app: pData[14]=0xB
 0>
 0> <debug> app: pData[15]=0xA
 0>
 0> <debug> app: pData[16]=0x0
 0>
 0> <debug> app: pData[17]=0x40
 0>
 0> <debug> app: pData[18]=0x0
 0>
 0> <debug> app: pData[19]=0x40
 0>
 0> <debug> app: pData[20]=0x4D
 0>
 0> <debug> app: pData[21]=0x2A
 0>
 0> <debug> app: pData[22]=0x3
 0>
 0> <debug> app: pData[23]=0x0
 0>

[snowuyl]

Fullscreen fstorage_write_and_read_data_doen't_match.txt Download

# SEGGER J-Link RTT Viewer V6.32i Terminal Log File
# Compiled: 15:22:50 on Jul 24 2018
# Logging started @ 24 Jun 2022 10:51:57
 0> 
 0> <info> app_timer: RTC: initialized.
 0> <debug> app: NOR_DATA_PERIOD=819
 0> 
 0> <debug> app: NOR_RECORD_PERIOD=8192
 0> 
 0> <info> app: bsp_button_longkey_handler 0.
 0> <info> app: POWER_ON.
 0> <info> app: External devices initializing start
 0> <info> app: Reg 0 20
 0> <info> app: Reg 9 A
 0> <info> app: Reg A D
 0> <info> app: Reg 1 B
 0> <info> app: Reg 2 D
 0> <info> app: Reg D F
 0> <info> app: Reg E 13
 0> <info> app: Reg 36 10
 0> <info> app: Reg 37 13
 0> <info> app: Reg 5 11
 0> <info> app: Reg 6 13
 0> <info> app: Reg F 15
 0> <info> app: Reg 10 19
 0> <info> app: Reg 3 16
 0> <info> app: Reg 4 19
 0> <info> app: Reg 7 17
 0> <info> app: Reg 8 19
 0> <info> app: Reg 11 1B
 0> <info> app: Reg 12 1F
 0> <info> app: Reg 43 0
 0> <info> app: Reg 44 0
 0> <info> app: Reg B 1D
 0> <info> app: Reg C 1F
 0> <info> app: Reg 13 21
 0> <info> app: Reg 14 25
 0> <info> app: Reg 1D 3F
 0> <info> app: Reg 64 0
 0> <info> app: Reg 65 27
 0> <info> app: Reg 66 0
 0> <info> app: Reg 67 27
 0> <info> app: Reg 68 0
 0> <info> app: Reg 69 27
 0> <info> app: Reg 52 2C
 0> <info> app: Reg 53 2C
 0> <info> app: Reg 6A 32
 0> <info> app: Reg 6B 38
 0> <info> app: Reg 1E 101
 0> <info> app: Reg 20 3
 0> <info> app: Reg 21 2
 0> <info> app: Reg 22 802084
 0> <info> app: Reg 23 124218
 0> <info> app: Reg 4B F
 0> <info> app: Reg 50 18
 0> <info> app: Reg 31 20
 0> <info> app: Reg 39 5
 0> <info> app: Reg 4E 0
 0> <info> app: Reg 4E 8
 0> <info> app: Reg 45 8
 0> <info> app: Reg 46 13
 0> <info> app: Reg 47 14
 0> <info> app: Reg 48 1F
 0> <info> app: Reg 0 21
 0> <info> app: External devices initializing finish
 0> <debug> nrf_ble_gatt: Requesting to update ATT MTU to 185 bytes on connection 0x0.
 0> <info> app: Connected.
 0> <info> app: PHY update request.
 0> <debug> nrf_ble_gatt: Peer on connection 0x0 requested a data length of 251 bytes.
 0> <debug> nrf_ble_gatt: Updating data length to 27 on connection 0x0.
 0> <debug> nrf_ble_gatt: Data length updated to 27 on connection 0x0.
 0> <debug> nrf_ble_gatt: max_rx_octets: 27
 0> <debug> nrf_ble_gatt: max_tx_octets: 27
 0> <debug> nrf_ble_gatt: max_rx_time: 2120
 0> <debug> nrf_ble_gatt: max_tx_time: 2120
 0> <debug> nrf_ble_gatt: ATT MTU updated to 185 bytes on connection 0x0 (response).
 0> <info> app: bsp_button_longkey_handler 1.
 0> <info> app: Disconnected.
 0> <debug> nrf_ble_gatt: Requesting to update ATT MTU to 185 bytes on connection 0x0.
 0> <info> app: Connected.
 0> <info> app: PHY update request.
 0> <debug> nrf_ble_gatt: Peer on connection 0x0 requested a data length of 251 bytes.
 0> <debug> nrf_ble_gatt: Updating data length to 27 on connection 0x0.
 0> <debug> nrf_ble_gatt: Data length updated to 27 on connection 0x0.
 0> <debug> nrf_ble_gatt: max_rx_octets: 27
 0> <debug> nrf_ble_gatt: max_tx_octets: 27
 0> <debug> nrf_ble_gatt: max_rx_time: 2120
 0> <debug> nrf_ble_gatt: max_tx_time: 2120
 0> <debug> nrf_ble_gatt: ATT MTU updated to 185 bytes on connection 0x0 (response).
 0> <info> app: Disconnected.
 0> <debug> nrf_ble_gatt: Requesting to update ATT MTU to 185 bytes on connection 0x0.
 0> <info> app: Connected.
 0> <debug> nrf_ble_gatt: Peer on connection 0x0 requested an ATT MTU of 527 bytes.
 0> <debug> nrf_ble_gatt: Updating ATT MTU to 185 bytes (desired: 185) on connection 0x0.
 0> <debug> nrf_ble_gatt: ATT MTU updated to 185 bytes on connection 0x0 (response).
 0> <debug> nrf_ble_gatt: Peer on connection 0x0 requested a data length of 251 bytes.
 0> <debug> nrf_ble_gatt: Updating data length to 27 on connection 0x0.
 0> <debug> nrf_ble_gatt: Data length updated to 27 on connection 0x0.
 0> <debug> nrf_ble_gatt: max_rx_octets: 27
 0> <debug> nrf_ble_gatt: max_tx_octets: 27
 0> <debug> nrf_ble_gatt: max_rx_time: 2120
 0> <debug> nrf_ble_gatt: max_tx_time: 2120
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  4D                     |M       
 0> <info> app: M
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x0
 0> <debug> app: data[2]=0x0
 0> <debug> app: data[3]=0x0
 0> <debug> app: data[4]=0x0
 0> <debug> app: data[5]=0x0
 0> <debug> app: data[6]=0x0
 0> <info> app: 
 0> 
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  45                     |E       
 0> <info> app: E
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x45
 0> <debug> app: data[2]=0x0
 0> <debug> app: data[3]=0x0
 0> <debug> app: data[4]=0x0
 0> <debug> app: data[5]=0x0
 0> <debug> app: data[6]=0x0
 0> <info> app: 
 0> 
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  41                     |A       
 0> <info> app: A
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x45
 0> <debug> app: data[2]=0x41
 0> <debug> app: data[3]=0x0
 0> <debug> app: data[4]=0x0
 0> <debug> app: data[5]=0x0
 0> <debug> app: data[6]=0x0
 0> <info> app: 
 0> 
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  53                     |S       
 0> <info> app: S
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x45
 0> <debug> app: data[2]=0x41
 0> <debug> app: data[3]=0x53
 0> <debug> app: data[4]=0x0
 0> <debug> app: data[5]=0x0
 0> <debug> app: data[6]=0x0
 0> <info> app: 
 0> 
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  55                     |U       
 0> <info> app: U
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x45
 0> <debug> app: data[2]=0x41
 0> <debug> app: data[3]=0x53
 0> <debug> app: data[4]=0x55
 0> <debug> app: data[5]=0x0
 0> <debug> app: data[6]=0x0
 0> <info> app: 
 0> 
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  52                     |R       
 0> <info> app: R
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x45
 0> <debug> app: data[2]=0x41
 0> <debug> app: data[3]=0x53
 0> <debug> app: data[4]=0x55
 0> <debug> app: data[5]=0x52
 0> <debug> app: data[6]=0x0
 0> <info> app: 
 0> 
 0> <info> app: Received data from BLE NUS. Writing data on UART.
 0> <debug> app:  45                     |E       
 0> <info> app: E
 0> <debug> app: length=1
 0> <debug> app: data[0]=0x4D
 0> <debug> app: data[1]=0x45
 0> <debug> app: data[2]=0x41
 0> <debug> app: data[3]=0x53
 0> <debug> app: data[4]=0x55
 0> <debug> app: data[5]=0x52
 0> <debug> app: data[6]=0x45
 0> <info> app: 
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=0, addr=0x7D000
 0> 
 0> <debug> app: state=0
 0> 
 0> <debug> app: START E
 0> 
 0> <debug> app: START x
 0> 
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt er
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_ERASE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=0, addr=0x7D000
 0> 
 0> <debug> app: state=2
 0> 
 0> <debug> app: START E
 0> 
 0> <debug> app: addr=0x7D000, wlen=24
 0> 
 0> <debug> app: pData w
 0> 
 0> <debug> app: pData[0]=0xDE
 0> 
 0> <debug> app: pData[1]=0xDD
 0> 
 0> <debug> app: pData[2]=0x0
 0> 
 0> <debug> app: pData[3]=0x0
 0> 
 0> <debug> app: pData[4]=0x0
 0> 
 0> <debug> app: pData[5]=0x0
 0> 
 0> <debug> app: pData[6]=0x0
 0> 
 0> <debug> app: pData[7]=0x0
 0> 
 0> <debug> app: pData[8]=0x0
 0> 
 0> <debug> app: pData[9]=0x0
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0x0
 0> 
 0> <debug> app: pData[13]=0x0
 0> 
 0> <debug> app: pData[14]=0x0
 0> 
 0> <debug> app: pData[15]=0x0
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x0
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x0
 0> 
 0> <debug> app: pData[20]=0x0
 0> 
 0> <debug> app: pData[21]=0x0
 0> 
 0> <debug> app: pData[22]=0x0
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: START x
 0> 
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt w
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_WRITE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=0, addr=0x7D000
 0> 
 0> <debug> app: state=4
 0> 
 0> <debug> app: START E
 0> 
 0> <debug> app: START x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0> 
 0> <debug> app: state=4
 0> 
 0> <debug> app: END E
 0> 
 0> <debug> app: addr=0x7D000, len=24
 0> 
 0> <debug> app: data r
 0> 
 0> <debug> app: pData[0]=0x1C
 0> 
 0> <debug> app: pData[1]=0x8A
 0> 
 0> <debug> app: pData[2]=0x0
 0> 
 0> <debug> app: pData[3]=0x20
 0> 
 0> <debug> app: pData[4]=0xE9
 0> 
 0> <debug> app: pData[5]=0xFF
 0> 
 0> <debug> app: pData[6]=0xFF
 0> 
 0> <debug> app: pData[7]=0xFF
 0> 
 0> <debug> app: pData[8]=0x98
 0> 
 0> <debug> app: pData[9]=0x2
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0x61
 0> 
 0> <debug> app: pData[13]=0xD0
 0> 
 0> <debug> app: pData[14]=0xB
 0> 
 0> <debug> app: pData[15]=0xA
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x40
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x40
 0> 
 0> <debug> app: pData[20]=0x4D
 0> 
 0> <debug> app: pData[21]=0x2A
 0> 
 0> <debug> app: pData[22]=0x3
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: record.offsetStart=0x20E9FF
 0> <debug> app: record.offsetEnd=0xFFFF9802
 0> <debug> app: END X
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt er
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_ERASE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0> 
 0> <debug> app: state=2
 0> 
 0> <debug> app: END E
 0> 
 0> <debug> app: record.offsetEnd=0x205A
 0> <debug> app: addr=0x7D000, wlen=24
 0> 
 0> <debug> app: pData w
 0> 
 0> <debug> app: pData[0]=0xDE
 0> 
 0> <debug> app: pData[1]=0xDD
 0> 
 0> <debug> app: pData[2]=0xFF
 0> 
 0> <debug> app: pData[3]=0xFF
 0> 
 0> <debug> app: pData[4]=0xFF
 0> 
 0> <debug> app: pData[5]=0xD4
 0> 
 0> <debug> app: pData[6]=0xFF
 0> 
 0> <debug> app: pData[7]=0xFF
 0> 
 0> <debug> app: pData[8]=0xFF
 0> 
 0> <debug> app: pData[9]=0xD4
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0x0
 0> 
 0> <debug> app: pData[13]=0x0
 0> 
 0> <debug> app: pData[14]=0x0
 0> 
 0> <debug> app: pData[15]=0x0
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x0
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x0
 0> 
 0> <debug> app: pData[20]=0x0
 0> 
 0> <debug> app: pData[21]=0x0
 0> 
 0> <debug> app: pData[22]=0x0
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: END X
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt w
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_WRITE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0> 
 0> <debug> app: state=4
 0> 
 0> <debug> app: END E
 0> 
 0> <debug> app: addr=0x7D000, len=24
 0> 
 0> <debug> app: data r
 0> 
 0> <debug> app: pData[0]=0x1C
 0> 
 0> <debug> app: pData[1]=0x8A
 0> 
 0> <debug> app: pData[2]=0x0
 0> 
 0> <debug> app: pData[3]=0x20
 0> 
 0> <debug> app: pData[4]=0x0
 0> 
 0> <debug> app: pData[5]=0x2
 0> 
 0> <debug> app: pData[6]=0x0
 0> 
 0> <debug> app: pData[7]=0x21
 0> 
 0> <debug> app: pData[8]=0x2
 0> 
 0> <debug> app: pData[9]=0x0
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0xA1
 0> 
 0> <debug> app: pData[13]=0x90
 0> 
 0> <debug> app: pData[14]=0x47
 0> 
 0> <debug> app: pData[15]=0xC
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x0
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x0
 0> 
 0> <debug> app: pData[20]=0xAD
 0> 
 0> <debug> app: pData[21]=0x29
 0> 
 0> <debug> app: pData[22]=0x3
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: record.offsetStart=0x200002
 0> <debug> app: record.offsetEnd=0x210200
 0> <debug> app: END X
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt er
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_ERASE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0> 
 0> <debug> app: state=2
 0> 
 0> <debug> app: END E
 0> 
 0> <debug> app: record.offsetEnd=0x30B4
 0> <debug> app: addr=0x7D000, wlen=24
 0> 
 0> <debug> app: pData w
 0> 
 0> <debug> app: pData[0]=0xDE
 0> 
 0> <debug> app: pData[1]=0xDD
 0> 
 0> <debug> app: pData[2]=0x40
 0> 
 0> <debug> app: pData[3]=0x0
 0> 
 0> <debug> app: pData[4]=0x40
 0> 
 0> <debug> app: pData[5]=0x0
 0> 
 0> <debug> app: pData[6]=0x40
 0> 
 0> <debug> app: pData[7]=0x0
 0> 
 0> <debug> app: pData[8]=0x40
 0> 
 0> <debug> app: pData[9]=0x0
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0x0
 0> 
 0> <debug> app: pData[13]=0x0
 0> 
 0> <debug> app: pData[14]=0x0
 0> 
 0> <debug> app: pData[15]=0x0
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x0
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x0
 0> 
 0> <debug> app: pData[20]=0x0
 0> 
 0> <debug> app: pData[21]=0x0
 0> 
 0> <debug> app: pData[22]=0x0
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: END X
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt w
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_WRITE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0> 
 0> <debug> app: state=4
 0> 
 0> <debug> app: END E
 0> 
 0> <debug> app: addr=0x7D000, len=24
 0> 
 0> <debug> app: data r
 0> 
 0> <debug> app: pData[0]=0x1C
 0> 
 0> <debug> app: pData[1]=0x8A
 0> 
 0> <debug> app: pData[2]=0x0
 0> 
 0> <debug> app: pData[3]=0x20
 0> 
 0> <debug> app: pData[4]=0x4
 0> 
 0> <debug> app: pData[5]=0x0
 0> 
 0> <debug> app: pData[6]=0x13
 0> 
 0> <debug> app: pData[7]=0x0
 0> 
 0> <debug> app: pData[8]=0x2
 0> 
 0> <debug> app: pData[9]=0x0
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0x61
 0> 
 0> <debug> app: pData[13]=0xD0
 0> 
 0> <debug> app: pData[14]=0xB
 0> 
 0> <debug> app: pData[15]=0xA
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x40
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x40
 0> 
 0> <debug> app: pData[20]=0x4D
 0> 
 0> <debug> app: pData[21]=0x2A
 0> 
 0> <debug> app: pData[22]=0x3
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: record.offsetStart=0x200400
 0> <debug> app: record.offsetEnd=0x13000200
 0> <debug> app: END X
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt er
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_ERASE_RESULT ok
 0> <debug> app: Evt x
 0> 
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0> 
 0> <debug> app: state=2
 0> 
 0> <debug> app: END E
 0> 
 0> <debug> app: record.offsetEnd=0x41C4
 0> <debug> app: addr=0x7D000, wlen=24
 0> 
 0> <debug> app: pData w
 0> 
 0> <debug> app: pData[0]=0xDE
 0> 
 0> <debug> app: pData[1]=0xDD
 0> 
 0> <debug> app: pData[2]=0x40
 0> 
 0> <debug> app: pData[3]=0x0
 0> 
 0> <debug> app: pData[4]=0x40
 0> 
 0> <debug> app: pData[5]=0x0
 0> 
 0> <debug> app: pData[6]=0x40
 0> 
 0> <debug> app: pData[7]=0x0
 0> 
 0> <debug> app: pData[8]=0x40
 0> 
 0> <debug> app: pData[9]=0x0
 0> 
 0> <debug> app: pData[10]=0x0
 0> 
 0> <debug> app: pData[11]=0x0
 0> 
 0> <debug> app: pData[12]=0x0
 0> 
 0> <debug> app: pData[13]=0x0
 0> 
 0> <debug> app: pData[14]=0x0
 0> 
 0> <debug> app: pData[15]=0x0
 0> 
 0> <debug> app: pData[16]=0x0
 0> 
 0> <debug> app: pData[17]=0x0
 0> 
 0> <debug> app: pData[18]=0x0
 0> 
 0> <debug> app: pData[19]=0x0
 0> 
 0> <debug> app: pData[20]=0x0
 0> 
 0> <debug> app: pData[21]=0x0
 0> 
 0> <debug> app: pData[22]=0x0
 0> 
 0> <debug> app: pData[23]=0x0
 0> 
 0> <debug> app: END X
 0> <debug> app: Evt e
 0> 
 0> <debug> app: Evt w
 0> 
 0> <debug> app: NRF_FSTORAGE_EVT_WRITE_RESULT ok
 0> <debug> app: Evt x
 0> 

Fullscreen 3618.fstorage.c Download

#include "app_timer.h"
#include "error.h"
#include "fds_flash.h"
#include "fstorage.h"
#include "nrf_delay.h"
#include "nrf_fstorage.h"
#include "nrf_fstorage_sd.h"
#include "nrf_fstorage_nvmc.h"
#include "nrf_log.h"
#include "nrf_soc.h"
#include "spi_flash.h"

#define FSTORAGE_PAGE_NUM    3
#define FSTORAGE_WAIT_CNT    1000



static bool _gFstorageInitialized = false;
static bool _gFstorageEraseDone   = true;
static bool _gFstorageWriteDone   = true;
static bool _gFstoragePageDirty   = true;
static fstorage_state_t _gFstorageState = FSTORAGE_STATE_UNKNOWN;

static void _fstorageEvtHandler(nrf_fstorage_evt_t * p_evt);

NRF_FSTORAGE_DEF(nrf_fstorage_t _gFstorage) =
{
    /* Set a handler for fstorage events. */
    .evt_handler = _fstorageEvtHandler,

    /* These below are the boundaries of the flash space assigned to this instance of fstorage.
     * You must set these manually, even at runtime, before nrf_fstorage_init() is called.
     * The function nrf5_flash_end_addr_get() can be used to retrieve the last address on the
     * last page of flash available to write data. */
    .start_addr = 0x7D000,
    .end_addr   = 0x80000,
};

static void _fstorageEvtHandler(nrf_fstorage_evt_t * pEvt) {
    NRF_LOG_DEBUG("Evt e\n");
    switch (pEvt->id) {
        case NRF_FSTORAGE_EVT_WRITE_RESULT:
        {
            NRF_LOG_DEBUG("Evt w\n");
            _gFstorageWriteDone = true;
            _gFstorageState     = FSTORAGE_STATE_WRITTEN;
            if (pEvt->result != NRF_SUCCESS) {
               NRF_LOG_WARNING("fstorage writing failed %d bytes at address 0x%x.",
                            pEvt->len, pEvt->addr);
            } else {
                NRF_LOG_DEBUG("NRF_FSTORAGE_EVT_WRITE_RESULT ok");
                _gFstoragePageDirty = true;
            }
        } break;

        case NRF_FSTORAGE_EVT_ERASE_RESULT:
        {
            NRF_LOG_DEBUG("Evt er\n");
            _gFstorageEraseDone = true;
            _gFstorageState     = FSTORAGE_STATE_ERASED;
            if (pEvt->result != NRF_SUCCESS) {
                NRF_LOG_WARNING("fstorage erased failed %d page from address 0x%x.",
                                 pEvt->len, pEvt->addr);
            } else {
                NRF_LOG_DEBUG("NRF_FSTORAGE_EVT_ERASE_RESULT ok");
                _gFstoragePageDirty = false;
            }
        } break;

        default:
            break;
    }
     NRF_LOG_DEBUG("Evt x\n");
}

static uint32_t _fstorageGetEndAddr(void) {
    const uint32_t bootloaderAddr = BOOTLOADER_ADDRESS;
    const uint32_t pageSz         = NRF_FICR->CODEPAGESIZE;
    const uint32_t codeSz         = NRF_FICR->CODESIZE;

    return (bootloaderAddr != 0xFFFFFFFF ?
            bootloaderAddr : (codeSz * pageSz));
}

static uint32_t _fstorageGetStartAddr(void) {
    const uint32_t eraseUnit = _gFstorage.p_flash_info->erase_unit;
    const uint32_t endAddr = _fstorageGetEndAddr();
    const uint32_t bootloaderAddr = BOOTLOADER_ADDRESS;
    uint32_t startAddr;
    if (bootloaderAddr == 0xFFFFFFFF) {
        startAddr = endAddr - FDS_VIRTUAL_PAGES * eraseUnit; 
    } else {
        startAddr = bootloaderAddr - FSTORAGE_PAGE_NUM * eraseUnit;
    }

    NRF_LOG_DEBUG("endAddr=0x%x", endAddr);
    NRF_LOG_DEBUG("startAddr=0x%x", startAddr);
    return startAddr;
}
static bool _fstorageIsEraseNeeded(void) {
    return _gFstoragePageDirty;
}    

static uint32_t _fstorageRoundUpU32(const uint32_t len) {
    if (len % sizeof(uint32_t)) {
        return (len + sizeof(uint32_t) - (len % sizeof(uint32_t)));
    }

    return len;
}

static void power_manage(void)
{
#ifdef SOFTDEVICE_PRESENT
    (void) sd_app_evt_wait();
#else
    __WFE();
#endif
}

int _fstorageWait(const uint32_t timeOutCnt) {
#if 0
    NRF_LOG_DEBUG("timeOutCnt=%u\n", timeOutCnt);
    const uint32_t startCnt   = app_timer_cnt_get();
    NRF_LOG_DEBUG("startCnt=%u\n", startCnt);
    uint32_t endCnt;
    uint32_t diffCnt;

    do {
        endCnt           = app_timer_cnt_get();
        diffCnt          = app_timer_cnt_diff_compute(endCnt, startCnt);
        if (diffCnt >= timeOutCnt) {
            NRF_LOG_WARNING("_fstorage wait timeout\n");
            return ERROR_FSTORAGE_WAIT_TIMEOUT;
        }

        if (_gFstorageEraseDone && _gFstorageWriteDone) {
            break;
        }
    } while (true);

    NRF_LOG_DEBUG("endCnt=%u\n", endCnt);

    //while (nrf_fstorage_is_busy(&_gFstorage))
    while (!_gFstorageEraseDone || !_gFstorageWriteDone) {
        NRF_LOG_DEBUG("pm e\n");
        power_manage();
        NRF_LOG_DEBUG("pm x\n");
    }
#endif
		return 0;
    
}

int _fstorageRead(const uint32_t addr, const uint32_t len, uint8_t* data) {
    if (!_gFstorageInitialized) {
        return ERROR_FSTORAGE_UNINITIALIZED;
    }   

    const ret_code_t errCode = nrf_fstorage_read(&_gFstorage, addr, data, len);
    if (errCode != NRF_SUCCESS) {
        NRF_LOG_WARNING("nrf_fstorage_read() failed 0x%x\n", errCode);
        return ERROR_FSTORAGE_READ_FAIL;
    }

    NRF_LOG_DEBUG("addr=0x%x, len=%u\n", addr, len);
    recordPrintData("data r", data);

    return 0;
}

int _fstorageWrite(const uint32_t addr, const uint32_t len, void const* pData) {
    if (!_gFstorageInitialized) {
        return ERROR_FSTORAGE_UNINITIALIZED;
    }

    if (!_gFstorageEraseDone) {
        return ERROR_FSTORAGE_ERASE_ON_GOING;
    }

    if (!_gFstorageWriteDone) {
        return ERROR_FSTORAGE_WRITE_ON_GOING;
    }

    _gFstorageWriteDone = false;
    _gFstorageState     = FSTORAGE_STATE_WRITING;
    const uint32_t wlen = _fstorageRoundUpU32(len);
    NRF_LOG_DEBUG("addr=0x%x, wlen=%u\n", addr, wlen);
    recordPrintData("pData w", pData);
    const ret_code_t retCode = nrf_fstorage_write(&_gFstorage, addr, pData, wlen, NULL);
    if (retCode != NRF_SUCCESS) {
        NRF_LOG_WARNING("nrf_fstorage_write() failed 0x%x", retCode);
        return ERROR_FSTORAGE_WRITE_FAIL;
    }

    _fstorageWait(FSTORAGE_WAIT_CNT);

    return 0;
}


int fstorageInit(void) {
    // initializing variables
    _gFstorageInitialized = false;
    _gFstorageEraseDone   = true;
    _gFstorageWriteDone   = true;
    _gFstoragePageDirty   = true;
    _gFstorageState = FSTORAGE_STATE_UNKNOWN;

    const ret_code_t errCode = nrf_fstorage_init(&_gFstorage, &nrf_fstorage_sd, NULL);
    if (errCode != NRF_SUCCESS) {
        NRF_LOG_WARNING("nrf_fstorage_init() failed 0x%x", errCode);
        return ERROR_FSTORAGE_INITIALIZE_FAIL;
    }

    _gFstorageInitialized = true;

    return 0;
}    

int fstorageErase(const uint32_t addr, const uint32_t pagesCnt) {
    if (!_gFstorageInitialized) {
        return ERROR_FSTORAGE_UNINITIALIZED;
    }

    if (!_gFstorageEraseDone) {
        return ERROR_FSTORAGE_ERASE_ON_GOING;
    }

    if (!_gFstorageWriteDone) {
        return ERROR_FSTORAGE_WRITE_ON_GOING;
    }    

    _gFstorageEraseDone = false;
    _gFstorageState     = FSTORAGE_STATE_ERASED;
    const ret_code_t errCode = nrf_fstorage_erase(&_gFstorage, addr, pagesCnt, NULL);
    if (errCode != NRF_SUCCESS) { 
        NRF_LOG_WARNING("nrf_fstorage_erase() failed 0x%x", errCode);
        return ERROR_FSTORAGE_ERASE_FAIL;
    }

    _fstorageWait(FSTORAGE_WAIT_CNT);
    
    return 0;
}

int fstorageReadRecord(const uint32_t addr, record_t* pRecord) {
    uint8_t data[RECORD_LEN] = {0};
    if (_fstorageRead(addr, RECORD_LEN, data) != 0) {
        return ERROR_FDS_READ_FAIL;
    }

    data2Record(data, pRecord);

    return 0;
}    

int fstorageUpdateRecord(const record_data_type_t type, const record_t* pRecord) {
    const uint32_t addr = _fstorageGetStartAddr();
    NRF_LOG_DEBUG("type=%d, addr=0x%x\n", type, addr);
    const fstorage_state_t state = fstorageGetState();
    NRF_LOG_DEBUG("state=%d\n", state);
    switch (type) {
        case RECORD_DATA_TYPE_START:
        {  
            NRF_LOG_DEBUG("START E\n");
            if ((state == FSTORAGE_STATE_UNKNOWN)) {
                fstorageErase(addr, 1);    
            } else if (state == FSTORAGE_STATE_ERASED) {    
                record_t record;
                record.offsetStart = 0;
                record.offsetEnd   = 0;
                fstorageWriteRecord(addr, &record);
            }    
            NRF_LOG_DEBUG("START x\n");
        }    
        break;

        case RECORD_DATA_TYPE_END:
        {
            NRF_LOG_DEBUG("END E\n");
            record_t record;

            if ((state == FSTORAGE_STATE_UNKNOWN) || (state == FSTORAGE_STATE_WRITTEN)) {
                if (fstorageReadRecord(addr, &record) != 0) {
                    NRF_LOG_WARNING("fstorageReadRecord(0x%x) failed\n", addr);
                    return ERROR_FSTORAGE_READ_FAIL;
                }
                NRF_LOG_DEBUG("record.offsetStart=0x%x", record.offsetStart);
                NRF_LOG_DEBUG("record.offsetEnd=0x%x",   record.offsetEnd);
                fstorageErase(addr, 1);
            } else if (state == FSTORAGE_STATE_ERASED) {
                record.offsetEnd = pRecord->offsetEnd;
                NRF_LOG_DEBUG("record.offsetEnd=0x%x",   record.offsetEnd);
                fstorageWriteRecord(addr, &record);
            }    
            NRF_LOG_DEBUG("END X");
        }   
        break;    
    }    

    return 0;
}

int fstorageWriteRecord(const uint32_t addr, record_t* pRecord) {
    uint8_t data[RECORD_LEN] = {0};
    record2Data(pRecord, data);
    if (_fstorageWrite(addr, RECORD_LEN, data) != 0) {
        return ERROR_FSTORAGE_WRITE_FAIL;
    }

    return 0;
}

bool fstorageGetInitialized(void) {
    return _gFstorageInitialized;
}

bool fstorageGetEraseDone(void) {
    return _gFstorageEraseDone;
}

bool fstorageGetWriteDone(void) {
    return _gFstorageWriteDone;
}

bool fstorageGetPageDirty(void) {
    return _gFstoragePageDirty;
}

fstorage_state_t fstorageGetState(void) {
    return _gFstorageState;
}

7851.fstorage.h

[Vidar Berg]

Hi,

The NRF_FSTORAGE_EVT_WRITE_RESULT event is raised when the  actual write is complete. Did you wait for this event before you tried to read back the data? Maybe you can you include some code snippets to show me how you perform the flash write and read?

Best regards,

Vidar

[snowuyl]

Thanks for your reply! I have read data after NRF_FSTORAGE_EVT_WRITE_RESULT event is raised.

I have labeled NRF_FSTORAGE_EVT_WRITE_RESULT (-------1----------) and read fstorage data (-------2----------) in the following debug messages. What is start and end address of fstorage?

0> <debug> app: NRF_FSTORAGE_EVT_ERASE_RESULT ok
 0> <debug> app: Evt x
 0>
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=0, addr=0x7D000
 0>
 0> <debug> app: state=2
 0>
 0> <debug> app: START E
 0>
 0> <debug> app: addr=0x7D000, wlen=24
 0>
 0> <debug> app: pData w
 0>
 0> <debug> app: pData[0]=0xDE
 0>
 0> <debug> app: pData[1]=0xDD
 0>
 0> <debug> app: pData[2]=0x0
 0>
 0> <debug> app: pData[3]=0x0
 0>
 0> <debug> app: pData[4]=0x0
 0>
 0> <debug> app: pData[5]=0x0
 0>
 0> <debug> app: pData[6]=0x0
 0>
 0> <debug> app: pData[7]=0x0
 0>
 0> <debug> app: pData[8]=0x0
 0>
 0> <debug> app: pData[9]=0x0
 0>
 0> <debug> app: pData[10]=0x0
 0>
 0> <debug> app: pData[11]=0x0
 0>
 0> <debug> app: pData[12]=0x0
 0>
 0> <debug> app: pData[13]=0x0
 0>
 0> <debug> app: pData[14]=0x0
 0>
 0> <debug> app: pData[15]=0x0
 0>
 0> <debug> app: pData[16]=0x0
 0>
 0> <debug> app: pData[17]=0x0
 0>
 0> <debug> app: pData[18]=0x0
 0>
 0> <debug> app: pData[19]=0x0
 0>
 0> <debug> app: pData[20]=0x0
 0>
 0> <debug> app: pData[21]=0x0
 0>
 0> <debug> app: pData[22]=0x0
 0>
 0> <debug> app: pData[23]=0x0
 0>
 0> <debug> app: START x
 0>
 0> <debug> app: Evt e
 0>
 0> <debug> app: Evt w
 0>
 0> <debug> app: NRF_FSTORAGE_EVT_WRITE_RESULT ok (-------1----------)
 0> <debug> app: Evt x
 0>
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=0, addr=0x7D000
 0>
 0> <debug> app: state=4
 0>
 0> <debug> app: START E
 0>
 0> <debug> app: START x
 0>
 0> <debug> app: endAddr=0x80000
 0> <debug> app: startAddr=0x7D000
 0> <debug> app: type=1, addr=0x7D000
 0>
 0> <debug> app: state=4
 0>
 0> <debug> app: END E
 0>
 0> <debug> app: addr=0x7D000, len=24
 0> 8
 0> <debug> app: data r (-------2----------)
 0>
 0> <debug> app: pData[0]=0x1C
 0>
 0> <debug> app: pData[1]=0x8A
 0>
 0> <debug> app: pData[2]=0x0
 0>
 0> <debug> app: pData[3]=0x20
 0>
 0> <debug> app: pData[4]=0xE9
 0>
 0> <debug> app: pData[5]=0xFF
 0>
 0> <debug> app: pData[6]=0xFF
 0>
 0> <debug> app: pData[7]=0xFF
 0>
 0> <debug> app: pData[8]=0x98
 0>
 0> <debug> app: pData[9]=0x2
 0>
 0> <debug> app: pData[10]=0x0
 0>
 0> <debug> app: pData[11]=0x0
 0>
 0> <debug> app: pData[12]=0x61
 0>
 0> <debug> app: pData[13]=0xD0
 0>
 0> <debug> app: pData[14]=0xB
 0>
 0> <debug> app: pData[15]=0xA
 0>
 0> <debug> app: pData[16]=0x0
 0>
 0> <debug> app: pData[17]=0x40
 0>
 0> <debug> app: pData[18]=0x0
 0>
 0> <debug> app: pData[19]=0x40
 0>
 0> <debug> app: pData[20]=0x4D
 0>
 0> <debug> app: pData[21]=0x2A
 0>
 0> <debug> app: pData[22]=0x3
 0>
 0> <debug> app: pData[23]=0x0
 0>
 0> <debug> app: record.offsetStart=0x20E9FF
 0> <debug> app: record.offsetEnd=0xFFFF9802

[Vidar Berg]

It's a bit difficult to follow the program flow with the code pieces and log alone. Are you making sure to keep the source data in static memory until the write is complete (as noted in the api doc: nrf_fstorage_write)?

[snowuyl]

Thanks for your support! I will try to keep data in static memory on next Monday.