[Bug] [HPM] [uart_v2] 驱动判断 TX 中断时混用了“中断 ID”和“中断使能掩码”

[kaidegit]

RT-Thread Version

master

Affected area

Board Support Package (BSP)

Hardware/BSP vendor

HPMicro

Architecture

RISC-V

Board and hardware details

hpm6364

Develop Toolchain

GCC

Describe the bug

错误代码位于 libraries/drivers/drv_uart_v2.c:763：

if ((irq_id & uart_intr_tx_slot_avail) &&
(stat & uart_stat_tx_slot_avail)) {

irq_id 应与 uart_intr_id_tx_slot_avail 比较：

if ((irq_id == uart_intr_id_tx_slot_avail) &&
(stat & uart_stat_tx_slot_avail)) {

当前 UART6 配置为 TX_BUFSIZE=0，RT-Thread 会采用轮询发送，不创建 serial_tx。当 UART 接收线出现状态中断时：

• uart_intr_id_rx_line_stat = 0x6
• uart_intr_tx_slot_avail 掩码值包含 0x2
• 0x6 & 0x2 != 0

于是 RX line status 被误判为 TX 中断，随后在 libraries/drivers/drv_uart_v2.c:767 对空的 serial_tx 触发断言。

Other additional context

@helloeagleyang 是佬在负责这块吗

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