* @brief Setup the microcontroller system. * Initialize the Embedded Flash Interface, the PLL and update the * SystemCoreClock variable. * @param None * @retval None */
| 149 | * @retval None |
| 150 | */ |
| 151 | void SystemInit (void) |
| 152 | { |
| 153 | /* Set HSION bit */ |
| 154 | RCC->CR |= (uint32_t)0x00000001; |
| 155 | |
| 156 | /* Reset SW[1:0], HPRE[3:0], PPRE[2:0], ADCPRE and MCOSEL[2:0] bits */ |
| 157 | RCC->CFGR &= (uint32_t)0xF8FFB80C; |
| 158 | |
| 159 | /* Reset HSEON, CSSON and PLLON bits */ |
| 160 | RCC->CR &= (uint32_t)0xFEF6FFFF; |
| 161 | |
| 162 | /* Reset HSEBYP bit */ |
| 163 | RCC->CR &= (uint32_t)0xFFFBFFFF; |
| 164 | |
| 165 | /* Reset PLLSRC, PLLXTPRE and PLLMUL[3:0] bits */ |
| 166 | RCC->CFGR &= (uint32_t)0xFFC0FFFF; |
| 167 | |
| 168 | /* Reset PREDIV1[3:0] bits */ |
| 169 | RCC->CFGR2 &= (uint32_t)0xFFFFFFF0; |
| 170 | |
| 171 | /* Reset USARTSW[1:0], I2CSW, CECSW and ADCSW bits */ |
| 172 | RCC->CFGR3 &= (uint32_t)0xFFFFFEAC; |
| 173 | |
| 174 | /* Reset HSI14 bit */ |
| 175 | RCC->CR2 &= (uint32_t)0xFFFFFFFE; |
| 176 | |
| 177 | /* Disable all interrupts */ |
| 178 | RCC->CIR = 0x00000000; |
| 179 | |
| 180 | /* Configure the System clock frequency, AHB/APBx prescalers and Flash settings */ |
| 181 | SetSysClock(); |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * @brief Update SystemCoreClock according to Clock Register Values |
nothing calls this directly
no test coverage detected