simon
47c75110c9
Slaves push BMA456 samples at 16ms when enabled; the master caches per client and exposes ACCEL_SNAPSHOT and ACCEL_STREAM over UART. goTool adds dashboard stream controls, HTTP accel-stream routes, and an external WebSocket API with per-connection receive/interval and slave stream commands. Co-authored-by: Cursor <cursoragent@cursor.com>
52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
#ifndef UART_H
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#define UART_H
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#include "esp_err.h"
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#include "freertos/idf_additions.h"
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define UART_NUM UART_NUM_1
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#define UART_BAUD_RATE 921600
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// #define UART_TXD_PIN 3
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// #define UART_RXD_PIN 2
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#define UART_TXD_PIN 2
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#define UART_RXD_PIN 3
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#define UART_BUF_SIZE 2048
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#define START_MARKER 0xAA
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#define STOP_MARKER 0xCC
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#define MAX_BUF_SIZE 252
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#define MAX_PAYLOAD_SIZE \
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MAX_BUF_SIZE - 4 // Buffer overhead, Start, Len, CRC, End
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typedef enum {
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STATE_START,
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STATE_LEN,
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STATE_DATA,
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STATE_CHECKSUM,
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STATE_STOP
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} parser_state_t;
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typedef struct {
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uint8_t payload[MAX_PAYLOAD_SIZE];
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uint8_t len;
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uint8_t index;
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uint8_t checksum;
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parser_state_t state;
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} uart_packet_t;
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typedef struct {
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uint8_t cmd;
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} uart_command_t;
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void init_uart(QueueHandle_t cmd_queue);
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void uart_read_task(void *param);
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bool parse_uart_byte(uint8_t byte, uart_packet_t *p);
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esp_err_t uart_send_framed(const uint8_t *payload, size_t len);
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#endif
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