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Update UART baud rate and Clock frequency #230

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Merged
joao-victor-s merged 1 commit into from
May 26, 2025
Merged

Update UART baud rate and Clock frequency #230

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2 changes: 1 addition & 1 deletion port/ucontroller/nxp/lpc17xx/FreeRTOSConfig.h
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ licensing and training services.
#define configUSE_IDLE_HOOK 0
#define configMAX_PRIORITIES ( 6 )
#define configUSE_TICK_HOOK 0
#define configCPU_CLOCK_HZ ( ( unsigned long ) 8000000)
#define configCPU_CLOCK_HZ ( ( unsigned long ) 18432000)
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 80 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 0x4000 ) )
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4 changes: 2 additions & 2 deletions port/ucontroller/nxp/lpc17xx/bootloader/src/main.c
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Expand Up @@ -200,9 +200,9 @@ int main(void)
lp17_pincfg(0, 3, pin_mode_none, pin_func_alt1);

/*
* Initialize UAR0 (19200bps, 8N1)
* Initialize UAR0 (115200bps, 8N1)
*/
lpc17_uart0_init(19200, 72000000);
lpc17_uart0_init(115200, 72000000);

if (fw_header->magic == 0xAAAAAAAA)
{
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4 changes: 2 additions & 2 deletions port/ucontroller/nxp/lpc17xx/lpc17_uart.c
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Expand Up @@ -40,8 +40,8 @@ void uart_init ( uint8_t id )

Chip_UART_Init( usart_cfg[id].ptr );

/* Standard 19200 baud rate */
uart_set_baud( UART_DEBUG, 19200 );
/* Standard 115200 baud rate */
uart_set_baud( UART_DEBUG, 115200 );

/* Defaults to 8N1, no parity */
uart_config_data( UART_DEBUG, ( UART_LCR_WLEN8 | UART_LCR_SBS_1BIT | UART_LCR_PARITY_DIS ) );
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7 changes: 6 additions & 1 deletion port/ucontroller/nxp/lpc17xx/lpcopen/src/sysinit_17xx_40xx.c
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Expand Up @@ -73,7 +73,12 @@ void Chip_SetupIrcClocking(void)
Chip_Clock_EnablePLL(SYSCTL_MAIN_PLL, SYSCTL_PLL_CONNECT);
}

#define CLOCK_8MHZ
#define CLOCK_18_432MHZ
#ifdef CLOCK_18_432MHZ
#define PLL_M (144-1)
#define PLL_N (5-1)
#define CLK_DIV (25-1)
#endif
#ifdef CLOCK_100MHZ
#define PLL_M (25-1)
#define PLL_N (2-1)
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