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Line 46... |
* @name User configuration
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* @name User configuration
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**************************************************************************/
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**************************************************************************/
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/**@{*/
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/**@{*/
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/** UART BAUD rate */
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/** UART BAUD rate */
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#define BAUD_RATE 19200
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#define BAUD_RATE 19200
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/** Use the custom ASM version for blinking the LEDs if != 0 */
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/** Use the custom ASM version for blinking the LEDs defined (= uncommented) */
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#define USE_ASM_VERSION 0
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//#define USE_ASM_VERSION
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/**@}*/
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/**@}*/
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/**********************************************************************//**
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/**********************************************************************//**
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* ASM function to blink LEDs (if enabled)
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* ASM function to blink LEDs
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**************************************************************************/
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**************************************************************************/
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extern void blink_led_asm(uint32_t gpio_out_addr);
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extern void blink_led_asm(uint32_t gpio_out_addr);
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/**********************************************************************//**
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* C function to blink LEDs
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**************************************************************************/
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void blink_led_c(void);
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/**********************************************************************//**
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/**********************************************************************//**
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* Main function; shows an incrementing 8-bit counter on GPIO.output(7:0).
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* Main function; shows an incrementing 8-bit counter on GPIO.output(7:0).
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*
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*
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* @note This program requires the GPIO controller to be synthesized (the UART is optional).
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* @note This program requires the GPIO controller to be synthesized (the UART is optional).
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Line 88... |
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// say hello
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// say hello
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neorv32_uart_print("Blinking LED demo program\n");
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neorv32_uart_print("Blinking LED demo program\n");
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// use ASM version of LED blinking (file: blink_led_in_asm.S)
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#ifdef USE_ASM_VERSION
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blink_led_asm((uint32_t)(&GPIO_OUTPUT));
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// use C version of LED blinking
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// use C version of LED blinking
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#if (USE_ASM_VERSION == 0)
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#else
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blink_led_c();
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#endif
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return 0;
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}
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/**********************************************************************//**
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* C-version of blinky LED counter
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**************************************************************************/
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void blink_led_c(void) {
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neorv32_gpio_port_set(0); // clear gpio output put
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neorv32_gpio_port_set(0); // clear gpio output put
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int cnt = 0;
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int cnt = 0;
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while (1) {
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while (1) {
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neorv32_gpio_port_set(cnt++ & 0xFF); // increment counter and mask for lowest 8 bit
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neorv32_gpio_port_set(cnt++ & 0xFF); // increment counter and mask for lowest 8 bit
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neorv32_cpu_delay_ms(200); // wait 200ms using busy wait
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neorv32_cpu_delay_ms(200); // wait 200ms using busy wait
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}
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}
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// use ASM version of LED blinking (file: blink_led_in_asm.S)
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#else
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blink_led_asm((uint32_t)(&GPIO_OUTPUT));
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#endif
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return 0;
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}
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}
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No newline at end of file
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No newline at end of file
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