例如 hc32f46x_interrupts.c/h 中配置的中断，如果在 IAP 中已经被设置，跳转到 APP 后，就无法再正常配置了（全局变量中会检查是否被配置过）- en_result_t enIrqRegistration(const stc_irq_regi_conf_t *pstcIrqRegiConf)
- {
- // todo, assert ...
- stc_intc_sel_field_t *stcIntSel;
- en_result_t enRet = Ok;
- //DDL_ASSERT(NULL != pstcIrqRegiConf->pfnCallback);
- DDL_ASSERT(IS_NULL_POINT(pstcIrqRegiConf->pfnCallback));
- /* IRQ032~127 whether out of range */
- if (((((pstcIrqRegiConf->enIntSrc/32)*6 + 32) > pstcIrqRegiConf->enIRQn) || \
- (((pstcIrqRegiConf->enIntSrc/32)*6 + 37) < pstcIrqRegiConf->enIRQn)) && \
- (pstcIrqRegiConf->enIRQn >= 32))
- {
- enRet = ErrorInvalidParameter;
- }
- else
- {
- stcIntSel = (stc_intc_sel_field_t *)((uint32_t)(&M4_INTC->SEL0) + \
- (4u * pstcIrqRegiConf->enIRQn));
- if (0x1FFu == stcIntSel->INTSEL) /* 如果已经初始化过，这里将不能再初始化 */
- {
- stcIntSel->INTSEL = pstcIrqRegiConf->enIntSrc;
- IrqHandler[pstcIrqRegiConf->enIRQn] = pstcIrqRegiConf->pfnCallback;
- }
- else
- {
- enRet = ErrorUninitialized;
- }
- }
- return enRet;
- }
| 
楼主
