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Redundancy: when doing k->n encoding, make the first n encoded packets the same as the n input packets
This helps with latency as well as recovery if less than n packets made it into the badge.
server/sender.c: out-of-bounds read when PAD_LENGTH > 0
senderSendPkt mishandles the PAD_LENGTH define if it is not 0. it will malloc a buffer of size (len + 2 * PAD_LENGTH) and memcpy (len + PAD_LENGTH) bytes from the packet, i.e. PAD_LENGTH bytes from behind the buffer. it will then send (len + 2 * PAD_LENGTH) bytes to the network, i.e. the extra data from behind the packet and PAD_LENGTH uninitialized bytes from the malloced ppacket.
E (212) wifi: nvs_flash_init failed
When I start the esp_recv on the 0.0.1 badge, I get:
E (212) wifi: nvs_flash_init failed
W (212) wifi: wifi nvs_open fail ret=4353
E (212) wifi: wifi_init 1324 ret=4353
ESP_ERROR_CHECK failed: esp_err_t 0x1101 at 0x400df6af
0x400df6af: app_main at /home/aengelen/dev/sha/bpp/esp32-recv/main/./main.c:75 (discriminator 1)
Should we disable nvs flash in the wifi configuration or find out why it cannot be initialized?
esp32-recv with 4MB flash
I'd be neat to be able to test esp32-recv with only 4MB of flash.
I hacked up partitions.csv based on https://dl.espressif.com/doc/esp-idf/latest/api-guides/partition-tables.html to:
nvs, data, nvs, 0x9000, 0x4000
otadata, data, ota, 0xd000, 0x2000
phy_init, data, phy, 0xf000, 0x1000
factory, app, factory, 0x10000, 0x0F0000
ota_0, 0, ota_0, , 1536K
ota_1, 0, ota_1, , 1536K
This seems to be accepted by the bootloader but then nvs_flash_init still fails:
ESP_ERROR_CHECK failed: esp_err_t 0x110d at 0x400df680
0x400df680: app_main at /home/aengelen/dev/sha/bpp/esp32-recv/main/.
/main.c:71 (discriminator 1)
file: "/home/aengelen/dev/sha/bpp/esp32-recv/main/./main.c" line 71
func: app_main
expression: nvs_flash_init()
from nvs.h:
#define ESP_ERR_NVS_NO_FREE_PAGES (ESP_ERR_NVS_BASE + 0x0d) /*!< NVS partition doesn't contain any empty pages. This may happen if NVS partition was truncated. Erase the whole partition and call nvs_flash_init again. */
Should I erase the partition? How?
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