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setup: enable Clock Security System interrupt

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This commit is contained in:
Pavol Rusnak 2017-07-26 16:51:27 +02:00
parent 0760ff0468
commit c8ddd90409
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 16 additions and 0 deletions
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setup.c
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@ -33,6 +33,15 @@ void __attribute__((noreturn)) __stack_chk_fail(void)
for (;;) {} // loop forever
}
void nmi_handler(void)
{
// Clock Security System triggered NMI
if ((RCC_CIR & RCC_CIR_CSSF) != 0) {
layoutDialog(&bmp_icon_error, NULL, NULL, NULL, "Clock instability", "detected.", NULL, "Please unplug", "the device.", NULL);
for (;;) {} // loop forever
}
}
void setup(void)
{
// setup clock
@ -57,6 +66,9 @@ void setup(void)
// we don't use the first random number generated after setting the RNGEN bit in setup
random32();
// enable CSS (Clock Security System)
RCC_CR |= RCC_CR_CSSON;
// set GPIO for buttons
gpio_mode_setup(GPIOC, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, GPIO2 | GPIO5);
@ -92,6 +104,10 @@ void setupApp(void)
// "Each subsequent generated random number has to be compared with the previously generated
// number. The test fails if any two compared numbers are equal (continuous random number generator test)."
random32();
// enable CSS (Clock Security System)
RCC_CR |= RCC_CR_CSSON;
// hotfix for old bootloader
gpio_mode_setup(GPIOA, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO9);
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_8, SPI_CR1_CPOL_CLK_TO_0_WHEN_IDLE, SPI_CR1_CPHA_CLK_TRANSITION_1, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);