HardwareDriver/nuvoton/m451/OLED/M451/OLED_TEST/main.c

147 lines
4.3 KiB
C

#include "M451Series.h"
#include "ssd1306.h"
#define PLL_CLOCK 72000000
void HalInit(){
SYS_UnlockReg();
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable Internal RC 22.1184MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for Internal RC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to Internal RC and HCLK source divide 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable external XTAL 12MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for external XTAL clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
/* Enable I2C0 module clock */
CLK_EnableModuleClock(I2C0_MODULE);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
SYS->GPD_MFPL &= ~SYS_GPD_MFPL_PD4MFP_Msk;
SYS->GPD_MFPL |= SYS_GPD_MFPL_PD4MFP_I2C0_SDA;
SYS->GPD_MFPL &= ~SYS_GPD_MFPL_PD5MFP_Msk;
SYS->GPD_MFPL |= SYS_GPD_MFPL_PD5MFP_I2C0_SCL;
I2C_Open(I2C0,100000);
printf("I2C clock %d Hz\n", I2C_GetBusClockFreq(I2C0));
I2C_SetSlaveAddr(I2C0, 0, 0x78, 0); /* Slave Address : 0x15 */
SYS_LockReg();
//GPIO_SetMode(PB,BIT14,GPIO_PMD_INPUT);
//GPIO_SetMode(PB,BIT9,GPIO_PMD_OUTPUT);
//I2C_EnableInt(I2C0);
//NVIC_EnableIRQ(I2C0_IRQn);
}
typedef void (*I2C_FUNC)(uint32_t u32Status);
static I2C_FUNC s_I2CHandlerFn = NULL;
volatile int muxI2C = 0;
uint8_t g_au8TxData[3];
uint8_t g_u8DeviceAddr = 0x50;
uint8_t g_u8DataLen;
volatile uint8_t g_u8EndFlag = 0;
/*---------------------------------------------------------------------------------------------------------*/
/* I2C Tx Callback Function */
/*---------------------------------------------------------------------------------------------------------*/
void I2C_MasterTx(uint32_t u32Status)
{
if(u32Status == 0x08) /* START has been transmitted */
{
I2C_SET_DATA(I2C0, g_u8DeviceAddr << 1); /* Write SLA+W to Register I2CDAT */
I2C_SET_CONTROL_REG(I2C0, I2C_CTL_SI);
}
else if(u32Status == 0x18) /* SLA+W has been transmitted and ACK has been received */
{
I2C_SET_DATA(I2C0, g_au8TxData[g_u8DataLen++]);
I2C_SET_CONTROL_REG(I2C0, I2C_CTL_SI);
}
else if(u32Status == 0x20) /* SLA+W has been transmitted and NACK has been received */
{
I2C_STOP(I2C0);
I2C_START(I2C0);
}
else if(u32Status == 0x28) /* DATA has been transmitted and ACK has been received */
{
if(g_u8DataLen != 3)
{
I2C_SET_DATA(I2C0, g_au8TxData[g_u8DataLen++]);
I2C_SET_CONTROL_REG(I2C0, I2C_CTL_SI);
}
else
{
I2C_SET_CONTROL_REG(I2C0, I2C_CTL_STO_SI);
g_u8EndFlag = 1;
}
}
else
{
/* TO DO */
printf("Status 0x%x is NOT processed\n", u32Status);
}
}
void I2C0_IRQHandler(void)
{
uint32_t u32Status;
u32Status = I2C_GET_STATUS(I2C0);
if(I2C_GET_TIMEOUT_FLAG(I2C0))
{
/* Clear I2C0 Timeout Flag */
I2C_ClearTimeoutFlag(I2C0);
}
else
{
if(s_I2CHandlerFn != NULL)
s_I2CHandlerFn(u32Status);
}
}
int main(){
HalInit();
Init_LCD();
clear_LCD();
print_Line(0, "NuTiny - Nano102");
print_Line(1, "Cortex-M0 @32MHz");
print_Line(2, "Ultra Low Power ");
print_Line(3, "0.96 OLED 128x64");
print_C(0, 0, 'N');
print_C(0, 1, 'C');
print_C(0, 2, 'U');
print_C(0, 3, ' ');
while(1){
print_C(0, 2, 'U');
}
return 0;
}