| Line 73... |
Line 73... |
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// capture all exceptions and give debug info via UART
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// capture all exceptions and give debug info via UART
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// this is not required, but keeps us safe
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// this is not required, but keeps us safe
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neorv32_rte_setup();
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neorv32_rte_setup();
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// init UART at default baud rate, no parity bits, no rx interrupt, no tx interrupt
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// init UART at default baud rate, no parity bits, no rx interrupt, no tx interrupt
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neorv32_uart_setup(BAUD_RATE, 0b00, 0, 0);
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neorv32_uart_setup(BAUD_RATE, 0b00, 0, 0);
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// check available hardware extensions and compare with compiler flags
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// check available hardware extensions and compare with compiler flags
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neorv32_rte_check_isa(0); // silent = 0 -> show message if isa mismatch
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neorv32_rte_check_isa(0); // silent = 0 -> show message if isa mismatch
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| Line 88... |
Line 87... |
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// show the cause of the last processor reset
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// show the cause of the last processor reset
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neorv32_uart_print("Cause of last processor reset: ");
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neorv32_uart_print("Cause of last processor reset: ");
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uint8_t wdt_cause = neorv32_wdt_get_cause();
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uint8_t wdt_cause = neorv32_wdt_get_cause();
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if (wdt_cause == 1) {
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if (wdt_cause == 0) {
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neorv32_uart_print("External reset\n");
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neorv32_uart_print("External reset\n");
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}
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}
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else if (wdt_cause == 2) {
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else if (wdt_cause == 1) {
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neorv32_uart_print("Watchdog timeout\n");
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neorv32_uart_print("Watchdog\n");
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}
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else if (wdt_cause == 3) {
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neorv32_uart_print("Watchdog access fault\n");
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}
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}
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else {
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else {
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neorv32_uart_print("Undefined\n");
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neorv32_uart_print("Undefined\n");
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}
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}
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// the watchod has a 20-bit counter, which trigger either an interrupt or a system reset
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// the watchod has a 20-bit counter, which triggers either an interrupt or a system reset
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// when overflowing
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// when overflowing
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// init watchdog (watchdog timer increment = cpu_clock/64, trigger reset on overflow)
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// init watchdog (watchdog timer increment = cpu_clock/64, trigger reset on overflow, lock
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neorv32_wdt_setup(CLK_PRSC_64, 1);
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// access so nobody can alter the configuration until next reset)
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neorv32_wdt_setup(CLK_PRSC_64, 1, 1);
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neorv32_uart_print("\n\nWill reset WDT 64 times.\n"
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neorv32_uart_print("\n\nWill reset WDT 64 times.\n"
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"A system reset will be executed in the following time out.\n"
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"A system reset will be executed in the following time out.\n"
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