32 lines
995 B
Plaintext
32 lines
995 B
Plaintext
if (cfg->rtu.de_pin >= 0)
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{
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ret = uart_set_mode(uart_num, UART_MODE_RS485_HALF_DUPLEX);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "uart_set_mode(RS485_HALF_DUPLEX) failed: %s", esp_err_to_name(ret));
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return ret;
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}
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ESP_LOGI(TAG, "UART RS485 half-duplex mode enabled (DE pin=%d)", cfg->rtu.de_pin);
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}
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else
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{
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ESP_LOGI(TAG, "UART normal mode enabled (shield auto-direction assumed)");
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}
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if (resp_len > 0U)
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{
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int written = uart_write_bytes(g_rtu_ctx.uart_num,
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(const char *)tx_buf,
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(uint32_t)resp_len);
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ESP_LOGI(TAG, "UART wrote %d bytes", written);
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if (written < 0)
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{
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ESP_LOGW(TAG, "uart_write_bytes failed");
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continue;
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}
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ESP_ERROR_CHECK(uart_wait_tx_done(g_rtu_ctx.uart_num, pdMS_TO_TICKS(100)));
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} |