[solved]fastest communication

Posted on April 20, 2015 at 15:15

Hi Hector,

- SPI cannot be used for AT commands

- I didn't get your question #2. You mean, associate an AT-command to a GPIO state? Move a GPIO --> perform an action?

Thank you

jerry

Posted on April 20, 2015 at 15:43

First of all, thank's for your quick answer!

The idea with my second question is to use the GPIO to send bytes from a STM32 (for instance) to the SPWF. Which could allow the transmission of an entire byte , even two bytes at each tick. But I think is not doable...

From my point of view the only way to send data (STM32=>SPWF) is through the UART, am I wrong?

Posted on April 20, 2015 at 16:20

Correct. Only UART can be used for AT-commands and/or data transmission.

j

Posted on April 21, 2015 at 08:53

Quite accurate answers, thanks for your replies.

Can I ask how the SPI/I2C connections can be used with this module? Are they really there?  

Posted on April 21, 2015 at 09:52

Hi Hector,

both I2C and SPI peripherals are really there, but cannot be used with a standard AT firmware. They are connected internally to STM32's I2C/SPI, but their activation/use depends on the firmware version into SPWF

j

Posted on June 25, 2015 at 23:50

Hi, I have a problem. The WIFI module is transmitting all the time through UART the next message:

+WIND:11:Initial SPI read failed: FFFFFFFF

and I never used the SPI and these pins are disconnect.

Posted on June 26, 2015 at 08:27

Hi Camilo,

unfortunatelly that WIND is not relates to SPI vs external host.

It's an error message provided when communication between module's internal STM32 and module's internal wifi chip fails.

Please give me some infos related to HW (nv_serial, under AT&V) and FW (version, under AT+S.STS).

Thanks

j

Posted on June 26, 2015 at 23:30

AT&V# Dumping All Configuration Keys:

#  nv_manuf = ST

#  nv_model = SPWF01SA1

#  nv_serial = 2914D26609

#  nv_wifi_macaddr = 00:80:E1:FF:F4:74

#  blink_led = 0

#  wind_off_low = 0x00000000

#  wind_off_medium = 0x00000000

#  wind_off_high = 0x00000000

#  user_desc = anonymous

#  escape_seq = at+s.

#  localecho1 = 0

#  console1_speed = 115200

#  console1_hwfc = 0

#  console1_enabled = 1

#  sleep_enabled = 0

#  standby_enabled = 0

#  standby_time = 10

#  wifi_tx_msdu_lifetime = 0

#  wifi_rx_msdu_lifetime = 0

#  wifi_operational_mode = 0x00000011

#  wifi_beacon_wakeup = 1

#  wifi_beacon_interval = 100

#  wifi_listen_interval = 0

#  wifi_rts_threshold = 3000

#  wifi_ssid = 53:54:54:65:73:74:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00

#  wifi_ssid_len = 6

#  wifi_channelnum = 6

#  wifi_opr_rate_mask = 0x00003FCF

#  wifi_bas_rate_mask = 0x0000000F

#  wifi_mode = 1

#  wifi_auth_type = 0

#  wifi_atim_window = 0

#  wifi_powersave = 0

#  wifi_tx_power = 18

#  wifi_rssi_thresh = 0

#  wifi_rssi_hyst = 0

#  wifi_ap_idle_timeout = 120

#  wifi_beacon_loss_thresh = 10

#  wifi_priv_mode = 0

#  wifi_wep_keys[0] = 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00

#  wifi_wep_keys[1] = 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00

#  wifi_wep_keys[2] = 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00

#  wifi_wep_keys[3] = 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00

#  wifi_wep_key_lens = 00:00:00:00

#  wifi_wep_default_key = 0

#  wifi_wpa_psk_raw = 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00

#  wifi_wpa_psk_text = 

#  ip_use_dhcp = 1

#  ip_use_httpd = 1

#  ip_mtu = 1500

#  ip_hostname = iwm-FF-F4-74

#  ip_apdomainname = captiveportal.net

#  ip_ipaddr = 192.168.0.50

#  ip_netmask = 255.255.255.0

#  ip_gw = 192.168.0.1

#  ip_dns = 192.168.0.1

#  ip_http_get_recv_timeout = 3000

#  ip_dhcp_timeout = 20

#  ip_sockd_timeout = 250

OK

AT+S.STS# Status & Statistics:

#  version = 141106-0950875-SPWF01S 

#  reset_reason = 0

#  conf_flag = 5

#  system_uptime = 82

#  system_sleeptime = 0

#  gpio_enable = 0

#  captiveportal = 0

#  wifi_state = 0

#  wifi_bssid = 00:00:00:00:00:00

#  wifi_aid = 0

#  wifi_channelnum = 0

#  wifi_sup_rate_mask = 0x00000000

#  wifi_bas_rate_mask = 0x00000000

#  wifi_chan_activity2 = 0x00000000

#  wifi_max_tx_power = 18

#  wifi_reg_country = 

#  wifi_dtim_period = 0

#  wifi_sleeping = 0

#  wifi_num_assoc = 0

#  ip_ipaddr = 0.0.0.0

#  ip_netmask = 0.0.0.0

#  ip_gw = 0.0.0.0

#  ip_dns = 0.0.0.0

#  ip_sock_open = 0

#  ip_sockd_port = 0

#  free_heap = 32000

#  min_heap = 31752

#  current_time = 82

OK

Thank you!

Posted on June 29, 2015 at 12:17

Hi Camilo,

I can suggest you to update FW to last release (download from ST.com, or ask for it to your ST local support), but honestly I think the problem is more serious than just a FW update.

Let me know if it helps. Otherwise we'll follow a different way (change the HW)

Thanks to you

jerry

Posted on June 30, 2015 at 15:01

Hi, thanks for your answer.

I bought the modules at mouser.com.

Can you explain me or give me some tutorial to update the FW?

Thanks a lot.