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drivers: wifi: esp: support 32-bit length in +IPD

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+IPD,<sock>,<bytes_avail> command in passive mode notifies about ESP
internal buffer usage level. Hence value of <bytes_avail> can exceed
4 digit value, which currently results in failure.

+IPD message is used in driver only for scheduling AT+CIPRECVDATA
command and actual value of <bytes_avail> doesn't really
matter. Increase maximum supported value that can be received from
9999 (maximum 4 digits) to 4294967295, which is maximum value of 32-bit
unsigned integer.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
This commit is contained in:
Marcin Niestroj 2020-12-10 18:07:20 +01:00 committed by Jukka Rissanen
parent 856fd652da
commit bef25cd97d
1 changed files with 2 additions and 2 deletions
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4
drivers/wifi/esp/esp.c
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@ -441,8 +441,8 @@ struct net_pkt *esp_prepare_pkt(struct esp_data *dev, struct net_buf *src,
* Passive mode: "+IPD,<id>,<len>\r\n"
* Other: "+IPD,<id>,<len>:<data>"
*/
#define MIN_IPD_LEN (sizeof("+IPD,I,LE") - 1)
#define MAX_IPD_LEN (sizeof("+IPD,I,LLLLE") - 1)
#define MIN_IPD_LEN (sizeof("+IPD,I,0E") - 1)
#define MAX_IPD_LEN (sizeof("+IPD,I,4294967295E") - 1)
MODEM_CMD_DIRECT_DEFINE(on_cmd_ipd)
{
char *endptr, end, ipd_buf[MAX_IPD_LEN + 1];