| Line 202... |
Line 202... |
// ------------------------------------------------
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// ------------------------------------------------
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// get clock speed (in Hz)
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// get clock speed (in Hz)
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uint32_t clock_speed = SYSINFO_CLK;
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uint32_t clock_speed = SYSINFO_CLK;
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// init SPI for 8-bit, clock-mode 0, no interrupt
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// init SPI for 8-bit, clock-mode 0
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if (clock_speed < 40000000) {
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if (clock_speed < 40000000) {
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neorv32_spi_setup(SPI_FLASH_CLK_PRSC, 0, 0, 0);
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neorv32_spi_setup(SPI_FLASH_CLK_PRSC, 0, 0);
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}
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}
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else {
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else {
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neorv32_spi_setup(CLK_PRSC_128, 0, 0, 0);
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neorv32_spi_setup(CLK_PRSC_128, 0, 0);
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}
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}
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if (STATUS_LED_EN == 1) {
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if (STATUS_LED_EN == 1) {
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// activate status LED, clear all others
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// activate status LED, clear all others
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neorv32_gpio_port_set(1 << STATUS_LED);
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neorv32_gpio_port_set(1 << STATUS_LED);
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}
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}
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// init UART (no parity bit, no interrupts)
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// init UART (no parity bit)
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neorv32_uart_setup(BAUD_RATE, 0, 0, 0);
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neorv32_uart_setup(BAUD_RATE, 0);
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// Configure machine system timer interrupt for ~2Hz
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// Configure machine system timer interrupt for ~2Hz
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neorv32_mtime_set_timecmp(neorv32_mtime_get_time() + (clock_speed/4));
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neorv32_mtime_set_timecmp(neorv32_mtime_get_time() + (clock_speed/4));
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// confiure trap handler (bare-metal, no neorv32 rte available)
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// confiure trap handler (bare-metal, no neorv32 rte available)
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