[eppp]: Add support for USB host -- device transport #590
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| @@ -14,7 +14,7 @@ brings in the WiFi connectivity from the "SLAVE" microcontroller. | |||
| SLAVE micro HOST micro | |||
| \|/ +----------------+ +----------------+ | |||
| | | | serial line | | | |||
| +---+ WiFi NAT PPPoS |======== UART / SPI =======| PPPoS client | | |||
| +---+ WiFi NAT PPPoS |=== UART / SPI / SDIO =====| PPPoS client | | |||
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We could remove the “channels” from this image and phrase it as link channel or something like that.
| @@ -39,14 +39,19 @@ brings in the WiFi connectivity from the "SLAVE" microcontroller. | |||
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| ## Throughput | |||
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| Tested with WiFi-NAPT example, no IRAM optimizations | |||
| Tested with WiFi-NAPT example | |||
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| ### UART @ 3Mbauds | |||
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| Link | TCP | UDP |
|---|---|---|
| UART @ 3Mbauds | 2Mbits/s | 2Mbits/s |
| SPI @ 16MHz | 5Mbits/s | 8Mbits/s |
| SDIO | 9Mbits/s | 11Mbits/s |
| @@ -128,16 +128,23 @@ void app_main(void) | |||
| ESP_ERROR_CHECK(ret); | |||
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| init_network_interface(); // WiFi station if withing SoC capabilities (otherwise a placeholder) | |||
| // ESP_ERROR_CHECK(esp_netif_init()); | |||
| ESP_GOTO_ON_FALSE((s_essl_mutex = xSemaphoreCreateMutex()), ESP_ERR_NO_MEM, err, TAG, "failed to create semaphore"); | ||
| return ret; | ||
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| err: |
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Are we leaking s_card on failure?
Please also review other initialized data for cleanup, e.g. s_essl_mutex
| * @param[in] event Device event type and data | ||
| * @param[in] user_ctx Argument we passed to the device open function | ||
| */ | ||
| static void handle_event(const cdc_acm_host_dev_event_data_t *event, void *user_ctx) |
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Should we allow users to add a custom event handler? Maybe add a parameter to init function and use this default function if not provided.
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depends on #511
both eppp server and client can choose to act as USB CDC ACM host or a device.
(may need a minor refactor, as we support more and more transports)