Firmware Update from Module#

This section provides a reference to the APIs used to perform firmware updates from the module.

Functions#

sl_status_t
sl_si91x_ota_firmware_upgradation(sl_ip_address_t server_ip, uint16_t server_port, uint16_t chunk_number, uint16_t timeout, uint16_t tcp_retry_count, bool asynchronous)

Create an OTAF client and initialize it with a given configuration.

sl_status_t
sl_si91x_http_otaf(uint8_t type, uint16_t flags, uint8_t *ip_address, uint16_t port, uint8_t *resource, uint8_t *host_name, uint8_t *extended_header, uint8_t *user_name, uint8_t *password, const uint8_t *post_data, uint32_t post_data_length)

Sends an HTTP request to a specified server URL.

Function Documentation#

sl_si91x_ota_firmware_upgradation#

sl_status_t sl_si91x_ota_firmware_upgradation (sl_ip_address_t server_ip, uint16_t server_port, uint16_t chunk_number, uint16_t timeout, uint16_t tcp_retry_count, bool asynchronous)

Create an OTAF client and initialize it with a given configuration.

Parameters
TypeDirectionArgument NameDescription
sl_ip_address_t[in]server_ip

OTAF server IP address of type sl_ip_address_t.

uint16_t[in]server_port

OTAF server port number.

uint16_t[in]chunk_number

Firmware content request chunk number.

uint16_t[in]timeout

TCP receive packet timeout.

uint16_t[in]tcp_retry_count

TCP retransmissions count.

bool[in]asynchronous

OTAF upgrade done asynchronously when this is set to true, else synchronous upgrade.

This function creates an OTAF (Over-The-Air Firmware) client and initializes it with the provided configuration parameters.

It supports both synchronous and asynchronous firmware upgrades.

In synchronous mode, the response is received via sl_net_event_handler_t with SL_NET_OTA_FW_UPDATE_EVENT as the event.

  • Pre-conditions:

    • sl_net_up API needs to be called before this API.

Returns

Note

  • For a safe firmware upgrade via TCP server, it will take approximately 65 seconds to upgrade the firmware of a 1.5 MB file.


sl_si91x_http_otaf#

sl_status_t sl_si91x_http_otaf (uint8_t type, uint16_t flags, uint8_t * ip_address, uint16_t port, uint8_t * resource, uint8_t * host_name, uint8_t * extended_header, uint8_t * user_name, uint8_t * password, const uint8_t * post_data, uint32_t post_data_length)

Sends an HTTP request to a specified server URL.

Parameters
TypeDirectionArgument NameDescription
uint8_t[in]type

Valid values are: 2 - HTTP_OTAF.

uint16_t[in]flags

Configuration flags. See the table below for details.

uint8_t *[in]ip_address

Server IP address.

uint16_t[in]port

Port number. Default: 80 - HTTP, 443 - HTTPS

uint8_t *[in]resource

Requested resource URL in string format.

  • The maximum supported HTTP URL is 2048 bytes, when the SL_SI91X_FEAT_LONG_HTTP_URL Bit is enabled in the feature_bit_map.

  • If the SL_SI91X_FEAT_LONG_HTTP_URL Bit is disabled, then the maximum supported length for HTTP URL is (872-(length of User_name + length of Password) - length of hostname - length of IP address) bytes excluding delimiters.

uint8_t *[in]host_name


Host name.

uint8_t *[in]extended_header

  • The purpose of this function is to append user configurable header fields to the default HTTP/HTTPS header. The extended header may contain multiple header fields, with each field terminated by "\r\n" (0x0D 0x0A).

    Example: key1:value1"\r\n"key2:value2"\r\n"

uint8_t *[in]user_name


Username for server authentication.

uint8_t *[in]password


Password for server authentication.

const uint8_t *[in]post_data


HTTP data to be posted to the server. (Currently not supported)

uint32_t[in]post_data_length

HTTP data length to be posted to the server. (Currently not supported)


This function sends an HTTP request to a specified server URL with optional data and headers, and facilitates firmware downloads from the server.

This API is blocking API.

By default, the following values are used:

  • SSL version: 1.0

  • HTTP version: 1.0

  • Certificate index: 0

Returns

Note

  • The following table lists the flags that can be used with this function:

Flags

Description

BIT(0)

Set this bit to enable HTTPS feature.

BIT(1)

Set this bit to enable IPv6. By default, it is configured to IPv4.

BIT(2)

Set this bit to support TLS Version 1.0 if HTTPS is enabled.

BIT(3)

Set this bit to support TLS Version 1.2 if HTTPS is enabled.

BIT(4)

Set this bit to support TLS Version 1.1 if HTTPS is enabled.

BIT(6)

Set this bit to use HTTP version 1.1

BIT(9)

Set this bit to specify index of SSL cert to be used for HTTPS.

BIT(10)

Set this bit to specify index of SSL cert to be used for HTTPS.

Note

    • Maximum supported length for user_name, password together is 278 bytes.

    • Maximum length should be 872 bytes, which includes user_name, password, host_name, ip_address, resource, and extended_header.

    • If username, password, hostname and extended http headers are not required, user should send empty string separated by delimiter.

    • If content of any field contains a comma then NULL delimiter should be used.

    • This API will wait until the response is received from NWP.

    • When the SL_SI91X_FEAT_LONG_HTTP_URL feature is enabled, the maximum supported URL length for HTTP OTAF is 2048 bytes.

    • To select certificate index 0, no additional flags are required to be configured explicitly.