Fix esp32 tcpip message starvation when task queue stressed

[mikee47]

Limit sming task processing to only those messages waiting in the queue. When heavily stressed, loop never exits and tcpip messages don't get serviced.

See #2971 (comment)

[pljakobs]

this works on the esp32 proper, but on the 32c3, I still get a stuck bootloader with Basic_Tasks

rst:0x15 (USB_UART_CHIP_RESET),boot:0xd (SPI_FAST_FLASH_BOOT)
Saved PC:0x42020d2a
SPIWP:0xee
mode:DIO, clock div:2
load:0x3fcd5820,len:0x1738
load:0x403cc710,len:0xb9c
load:0x403ce710,len:0x2e40
entry 0x403cc71a
I (24) boot: ESP-IDF v5.2.1-sming-1 2nd stage bootloader
I (24) boot: compile time Sep 17 2025 09:01:36
I (25) boot: chip revision: v0.4
I (28) boot.esp32c3: SPI Speed      : 40MHz
I (33) boot.esp32c3: SPI Mode       : DIO
I (38) boot.esp32c3: SPI Flash Size : 4MB
I (42) boot: Enabling RNG early entropy source...
I (48) boot: Partition Table:
I (51) boot: ## Label            Usage          Type ST Offset   Length
I (59) boot:  0 spiFlash         unknown          02 01 00000000 00400000
I (66) boot:  1 nvs              WiFi data        01 02 00009000 00006000
I (73) boot:  2 phy_init         RF data          01 01 0000f000 00001000
I (81) boot:  3 factory          factory app      00 00 00010000 000f0000
I (88) boot: End of partition table
I (93) esp_image: segment 0: paddr=00010020 vaddr=3c070020 size=163e0h ( 91104) map
I (121) esp_image: segment 1: paddr=00026408 vaddr=3fc90000 size=028c8h ( 10440) load
I (124) esp_image: segment 2: paddr=00028cd8 vaddr=40380000 size=07340h ( 29504) load
I (134) esp_image: segment 3: paddr=00030020 vaddr=42000020 size=6ac30h (437296) map
I (229) esp_image: segment 4: paddr=0009ac58 vaddr=40387340 size=08ad8h ( 35544) load
I (238) esp_image: segment 5: paddr=000a3738 vaddr=50000010 size=00004h (     4) load
I (244) boot: Loaded app from partition at offset 0x10000
I (244) boot: Disabling RNG early entropy source...
I (258) cpu_start: Unicore app
I (267) cpu_start: Pro cpu start user code
I (267) cpu_start: cpu freq: 160000000 Hz
I (268) cpu_start: Application information:
I (270) cpu_start: Project name:     Sming
I (275) cpu_start: App version:      6.0.x-dev-55-g98e9f4db-dirty
I (282) cpu_start: Compile time:     Sep 17 2025 09:01:31
I (288) cpu_start: ELF file SHA256:  7f57c2679...
I (293) cpu_start: ESP-IDF:          v5.2.1-sming-1
I (299) cpu_start: Min chip rev:     v0.3
I (304) cpu_start: Max chip rev:     v1.99 
I (308) cpu_start: Chip rev:         v0.4
I (313) heap_init: Initializing. RAM available for dynamic allocation:
I (321) heap_init: At 3FC98C90 len 00027370 (156 KiB): RAM
I (327) heap_init: At 3FCC0000 len 0001C710 (113 KiB): Retention RAM
I (334) heap_init: At 3FCDC710 len 00002950 (10 KiB): Retention RAM
I (341) heap_init: At 50000014 len 00001FD4 (7 KiB): RTCRAM
I (348) spi_flash: detected chip: generic
I (351) spi_flash: flash io: dio
I (356) sleep: Configure to isolate all GPIO pins in sleep state
I (362) sleep: Enable automatic switching of GPIO sleep configuration

is that just on my systems?

[pljakobs]

okay, my firmware builds and starts with this fix, not sure what the problem is with the Basic_Tasks app on the 32c3