20 bool twai_hal_init(twai_hal_context_t *hal_ctx, const twai_hal_config_t *config)  in twai_hal_init()  argument
23     hal_ctx->dev = TWAI_LL_GET_HW(config->controller_id);  in twai_hal_init()
24     hal_ctx->state_flags = 0;  in twai_hal_init()
25     hal_ctx->clock_source_hz = config->clock_source_hz;  in twai_hal_init()
27     twai_ll_enable_clock(hal_ctx->dev, true);  in twai_hal_init()
29     twai_ll_enter_reset_mode(hal_ctx->dev);  in twai_hal_init()
30 …if (!twai_ll_is_in_reset_mode(hal_ctx->dev)) {    //Must enter reset mode to write to config regis…  in twai_hal_init()
34 …twai_ll_enable_extended_reg_layout(hal_ctx->dev);        //Changes the address layout of the regis…  in twai_hal_init()
36     twai_ll_set_mode(hal_ctx->dev, TWAI_MODE_LISTEN_ONLY);    //Freeze REC by changing to LOM mode  in twai_hal_init()
38     twai_ll_set_tec(hal_ctx->dev, TWAI_HAL_INIT_TEC);  in twai_hal_init()
39     twai_ll_set_rec(hal_ctx->dev, TWAI_HAL_INIT_REC);  in twai_hal_init()
40     twai_ll_set_err_warn_lim(hal_ctx->dev, TWAI_HAL_INIT_EWL);    //Set default value of for EWL  in twai_hal_init()
44 void twai_hal_deinit(twai_hal_context_t *hal_ctx)  in twai_hal_deinit()  argument
47     (void) twai_ll_get_and_clear_intrs(hal_ctx->dev);  in twai_hal_deinit()
48     twai_ll_set_enabled_intrs(hal_ctx->dev, 0);  in twai_hal_deinit()
49     twai_ll_clear_arb_lost_cap(hal_ctx->dev);  in twai_hal_deinit()
50     twai_ll_clear_err_code_cap(hal_ctx->dev);  in twai_hal_deinit()
52     twai_ll_enable_clock(hal_ctx->dev, false);  in twai_hal_deinit()
53     hal_ctx->dev = NULL;  in twai_hal_deinit()
56 void twai_hal_configure(twai_hal_context_t *hal_ctx, const twai_timing_config_t *t_config, const tw…  in twai_hal_configure()  argument
62         brp = hal_ctx->clock_source_hz / t_config->quanta_resolution_hz;  in twai_hal_configure()
71     twai_ll_set_clock_source(hal_ctx->dev, clk_src);  in twai_hal_configure()
74 …twai_ll_set_bus_timing(hal_ctx->dev, brp, t_config->sjw, t_config->tseg_1, t_config->tseg_2, t_con…  in twai_hal_configure()
75 …twai_ll_set_acc_filter(hal_ctx->dev, f_config->acceptance_code, f_config->acceptance_mask, f_confi…  in twai_hal_configure()
76     twai_ll_set_clkout(hal_ctx->dev, clkout_divider);  in twai_hal_configure()
77     twai_ll_set_enabled_intrs(hal_ctx->dev, intr_mask);  in twai_hal_configure()
78     (void) twai_ll_get_and_clear_intrs(hal_ctx->dev);    //Clear any latched interrupts  in twai_hal_configure()
83 void twai_hal_start(twai_hal_context_t *hal_ctx, twai_mode_t mode)  in twai_hal_start()  argument
85     twai_ll_set_mode(hal_ctx->dev, mode);                //Set operating mode  in twai_hal_start()
87     twai_ll_set_tec(hal_ctx->dev, 0);  in twai_hal_start()
95         twai_ll_set_rec(hal_ctx->dev, 128);  in twai_hal_start()
99         twai_ll_set_rec(hal_ctx->dev, 0);  in twai_hal_start()
101     (void) twai_ll_get_and_clear_intrs(hal_ctx->dev);    //Clear any latched interrupts  in twai_hal_start()
102     TWAI_HAL_SET_BITS(hal_ctx->state_flags, TWAI_HAL_STATE_FLAG_RUNNING);  in twai_hal_start()
103     twai_ll_exit_reset_mode(hal_ctx->dev);  in twai_hal_start()
106 void twai_hal_stop(twai_hal_context_t *hal_ctx)  in twai_hal_stop()  argument
108     twai_ll_enter_reset_mode(hal_ctx->dev);  in twai_hal_stop()
109     (void) twai_ll_get_and_clear_intrs(hal_ctx->dev);  in twai_hal_stop()
110     twai_ll_set_mode(hal_ctx->dev, TWAI_MODE_LISTEN_ONLY);    //Freeze REC by changing to LOM mode  in twai_hal_stop()
112 …TWAI_HAL_CLEAR_BITS(hal_ctx->state_flags, TWAI_HAL_STATE_FLAG_TX_BUFF_OCCUPIED | TWAI_HAL_STATE_FL…  in twai_hal_stop()