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wzjs 2025/8/11 22:37:58
永久免费空间免备案,seo是什么简称,网站首页模板自定义,深圳公司网站建设服务文章目录 一.引脚定义二.SPIDAM配置三.在DMA发送完成中断里清除标志位四.SPIDMA发送TFT数据函数五.TFT驱动函数与满屏刷新函数六.测试 TFT芯片:ST7789V 一.引脚定义 /* Configuration for Example */ #define SPI_MASTER_SLAVE (SPI_MASTER) #define SPI_BUF_LEN …

文章目录

    • 一.引脚定义
    • 二.SPI+DAM配置
    • 三.在DMA发送完成中断里清除标志位
    • 四.SPI+DMA发送TFT数据函数
    • 五.TFT驱动函数与满屏刷新函数
    • 六.测试

TFT芯片:ST7789V

一.引脚定义

/* Configuration for Example */
#define SPI_MASTER_SLAVE        (SPI_MASTER)
#define SPI_BUF_LEN             (1024UL)/* SPI definition */
#define SPI_UNIT                        (CM_SPI1)
#define SPI_CLK                         (FCG1_PERIPH_SPI1)
#define SPI_TX_EVT_SRC                  (EVT_SRC_SPI1_SPTI)
#define SPI_RX_EVT_SRC                  (EVT_SRC_SPI1_SPRI)/* DMA definition */
#define DMA_UNIT                        (CM_DMA1)
#define DMA_CLK                         (FCG0_PERIPH_DMA1 | FCG0_PERIPH_AOS)
#define DMA_TX_CH                       (DMA_CH0)
#define DMA_TX_TRIG_CH                  (AOS_DMA1_0)
#define DMA_TX_INT_CH                   (DMA_INT_TC_CH0)
#define DMA_TX_INT_SRC                  (INT_SRC_DMA1_TC0)
#define DMA_TX_IRQ_NUM                  (INT006_IRQn)#define DMA_RX_CH                       (DMA_CH1)
#define DMA_RX_TRIG_CH                  (AOS_DMA1_1)/* SS = PA7 */
#define SPI_SS_PORT                     (GPIO_PORT_A)
#define SPI_SS_PIN                      (GPIO_PIN_04)
#define SPI_SS_FUNC                     (GPIO_FUNC_42)
/* SCK = PA8 */
#define SPI_SCK_PORT                    (GPIO_PORT_A)
#define SPI_SCK_PIN                     (GPIO_PIN_03)
#define SPI_SCK_FUNC                    (GPIO_FUNC_43)
/* MOSI = PB0 */
#define SPI_MOSI_PORT                   (GPIO_PORT_A)
#define SPI_MOSI_PIN                    (GPIO_PIN_01)
#define SPI_MOSI_FUNC                   (GPIO_FUNC_40)
/* MISO = PC5 */
#define SPI_MISO_PORT                   (GPIO_PORT_A)
#define SPI_MISO_PIN                    (GPIO_PIN_00)
#define SPI_MISO_FUNC                   (GPIO_FUNC_41)

二.SPI+DAM配置


/*** @brief  SPI configure.* @param  None* @retval None*/
void SPI_Config(void)
{stc_spi_init_t stcSpiInit;stc_dma_init_t stcDmaInit;stc_irq_signin_config_t stcIrqSignConfig;stc_gpio_init_t stcGpioInit;(void)GPIO_StructInit(&stcGpioInit);stcGpioInit.u16PinDrv       = PIN_HIGH_DRV;(void)GPIO_Init(SPI_SS_PORT,   SPI_SS_PIN,   &stcGpioInit);(void)GPIO_Init(SPI_SCK_PORT,  SPI_SCK_PIN,  &stcGpioInit);(void)GPIO_Init(SPI_MOSI_PORT, SPI_MOSI_PIN, &stcGpioInit);/* Configure Port */GPIO_SetFunc(SPI_SS_PORT,   SPI_SS_PIN,   SPI_SS_FUNC);GPIO_SetFunc(SPI_SCK_PORT,  SPI_SCK_PIN,  SPI_SCK_FUNC);GPIO_SetFunc(SPI_MOSI_PORT, SPI_MOSI_PIN, SPI_MOSI_FUNC);/* Configuration SPI */FCG_Fcg1PeriphClockCmd(SPI_CLK, ENABLE);SPI_StructInit(&stcSpiInit);stcSpiInit.u32WireMode          = SPI_4_WIRE;stcSpiInit.u32TransMode         = SPI_FULL_DUPLEX;stcSpiInit.u32MasterSlave       = SPI_MASTER_SLAVE;stcSpiInit.u32Parity            = SPI_PARITY_INVD;stcSpiInit.u32SpiMode           = SPI_MD_3;stcSpiInit.u32BaudRatePrescaler = SPI_BR_CLK_DIV2;stcSpiInit.u32DataBits          = SPI_DATA_SIZE_8BIT;stcSpiInit.u32FirstBit          = SPI_FIRST_MSB;stcSpiInit.u32FrameLevel        = SPI_1_FRAME;(void)SPI_Init(SPI_UNIT, &stcSpiInit);/* DMA configuration */FCG_Fcg0PeriphClockCmd(DMA_CLK, ENABLE);(void)DMA_StructInit(&stcDmaInit);stcDmaInit.u32BlockSize  = 1UL;stcDmaInit.u32TransCount = SPI_BUF_LEN;stcDmaInit.u32DataWidth  = DMA_DATAWIDTH_8BIT;/* Configure TX */stcDmaInit.u32SrcAddrInc  = DMA_SRC_ADDR_INC;stcDmaInit.u32DestAddrInc = DMA_DEST_ADDR_FIX;stcDmaInit.u32SrcAddr     = (uint32_t)(&u8TxBuf[0]);stcDmaInit.u32DestAddr    = (uint32_t)(&SPI_UNIT->DR);stcDmaInit.u32IntEn       = DMA_INT_ENABLE;if (LL_OK != DMA_Init(DMA_UNIT, DMA_TX_CH, &stcDmaInit)) {for (;;) {}}AOS_SetTriggerEventSrc(DMA_TX_TRIG_CH, SPI_TX_EVT_SRC);/* DMA receive NVIC configure */stcIrqSignConfig.enIntSrc    = DMA_TX_INT_SRC;stcIrqSignConfig.enIRQn      = DMA_TX_IRQ_NUM;stcIrqSignConfig.pfnCallback = &DMA_TransCompleteCallback;(void)INTC_IrqSignIn(&stcIrqSignConfig);NVIC_ClearPendingIRQ(stcIrqSignConfig.enIRQn);NVIC_SetPriority(stcIrqSignConfig.enIRQn, DDL_IRQ_PRIO_DEFAULT);NVIC_EnableIRQ(stcIrqSignConfig.enIRQn);/* Enable DMA and channel */DMA_Cmd(DMA_UNIT, ENABLE);DMA_ChCmd(DMA_UNIT, DMA_TX_CH, ENABLE);
}

三.在DMA发送完成中断里清除标志位

static void DMA_TransCompleteCallback(void)
{enTxCompleteFlag = SET;DMA_ClearTransCompleteStatus(DMA_UNIT, DMA_TX_INT_CH);
}

四.SPI+DMA发送TFT数据函数

void TFT_SEND_BYTE(uint8_t o_data)
{SPI_DC_1;enTxCompleteFlag = RESET;DMA_SetSrcAddr(DMA_UNIT, DMA_TX_CH, (uint32_t)(&o_data));DMA_SetTransCount(DMA_UNIT, DMA_TX_CH, 1);DMA_ChCmd(DMA_UNIT, DMA_TX_CH, ENABLE);SPI_Cmd(SPI_UNIT, ENABLE);while (RESET == enTxCompleteFlag) {}SPI_Cmd(SPI_UNIT, DISABLE);
}
void TFT_SEND_DATA(uint8_t * o_data,uint32_t size)
{SPI_DC_1;enTxCompleteFlag = RESET;DMA_SetSrcAddr(DMA_UNIT, DMA_TX_CH, (uint32_t)(o_data));DMA_SetTransCount(DMA_UNIT, DMA_TX_CH, size);DMA_ChCmd(DMA_UNIT, DMA_TX_CH, ENABLE);SPI_Cmd(SPI_UNIT, ENABLE);while (RESET == enTxCompleteFlag) {}SPI_Cmd(SPI_UNIT, DISABLE);}
void TFT_SEND_CMD(uint8_t o_command)
{SPI_DC_0;enTxCompleteFlag = RESET;DMA_SetSrcAddr(DMA_UNIT, DMA_TX_CH, (uint32_t)(&o_command));DMA_SetTransCount(DMA_UNIT, DMA_TX_CH, 1);DMA_ChCmd(DMA_UNIT, DMA_TX_CH, ENABLE);SPI_Cmd(SPI_UNIT, ENABLE);while (RESET == enTxCompleteFlag) {}SPI_Cmd(SPI_UNIT, DISABLE);
}

五.TFT驱动函数与满屏刷新函数

void tft_init()
{SPI_RST_1;TFT_SEND_CMD(0x01); // Software ResetDDL_DelayMS(1);TFT_SEND_CMD(0x11); // Sleep OutDDL_DelayMS(120);     // DELAY120ms//-----------------------ST7789V Frame rate setting-----------------////************************************************TFT_SEND_CMD(0x3A); // 65k modeTFT_SEND_BYTE(0x05);TFT_SEND_CMD(0xC5); // VCOMTFT_SEND_BYTE(0x1A);TFT_SEND_CMD(0x36); // 锟斤拷幕锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷TFT_SEND_BYTE(0x00);//-------------ST7789V Frame rate setting-----------//TFT_SEND_CMD(0xb2); // Porch SettingTFT_SEND_BYTE(0x05);TFT_SEND_BYTE(0x05);TFT_SEND_BYTE(0x00);TFT_SEND_BYTE(0x33);TFT_SEND_BYTE(0x33);TFT_SEND_CMD(0xb7);  // Gate ControlTFT_SEND_BYTE(0x05); // 12.2v   -10.43v//--------------ST7789V Power setting---------------//TFT_SEND_CMD(0xBB); // VCOMTFT_SEND_BYTE(0x3F);TFT_SEND_CMD(0xC0); // Power controlTFT_SEND_BYTE(0x2c);TFT_SEND_CMD(0xC2); // VDV and VRH Command EnableTFT_SEND_BYTE(0x01);TFT_SEND_CMD(0xC3);  // VRH SetTFT_SEND_BYTE(0x0F); // 4.3+( vcom+vcom offset+vdv)TFT_SEND_CMD(0xC4);  // VDV SetTFT_SEND_BYTE(0x20); // 0vTFT_SEND_CMD(0xC6);  // Frame Rate Control in Normal ModeTFT_SEND_BYTE(0X01); // 111HzTFT_SEND_CMD(0xd0); // Power Control 1TFT_SEND_BYTE(0xa4);TFT_SEND_BYTE(0xa1);TFT_SEND_CMD(0xE8); // Power Control 1TFT_SEND_BYTE(0x03);TFT_SEND_CMD(0xE9); // Equalize time controlTFT_SEND_BYTE(0x09);TFT_SEND_BYTE(0x09);TFT_SEND_BYTE(0x08);//---------------ST7789V gamma setting-------------//TFT_SEND_CMD(0xE0); // Set GammaTFT_SEND_BYTE(0xD0);TFT_SEND_BYTE(0x05);TFT_SEND_BYTE(0x09);TFT_SEND_BYTE(0x09);TFT_SEND_BYTE(0x08);TFT_SEND_BYTE(0x14);TFT_SEND_BYTE(0x28);TFT_SEND_BYTE(0x33);TFT_SEND_BYTE(0x3F);TFT_SEND_BYTE(0x07);TFT_SEND_BYTE(0x13);TFT_SEND_BYTE(0x14);TFT_SEND_BYTE(0x28);TFT_SEND_BYTE(0x30);TFT_SEND_CMD(0XE1); // Set GammaTFT_SEND_BYTE(0xD0);TFT_SEND_BYTE(0x05);TFT_SEND_BYTE(0x09);TFT_SEND_BYTE(0x09);TFT_SEND_BYTE(0x08);TFT_SEND_BYTE(0x03);TFT_SEND_BYTE(0x24);TFT_SEND_BYTE(0x32);TFT_SEND_BYTE(0x32);TFT_SEND_BYTE(0x3B);TFT_SEND_BYTE(0x14);TFT_SEND_BYTE(0x13);TFT_SEND_BYTE(0x28);TFT_SEND_BYTE(0x2F);TFT_SEND_CMD(0x21); //  0x21 0x20 颜色反转DDL_DelayMS(1);TFT_SEND_CMD(0x29); // 锟斤拷锟斤拷锟斤拷示
}void tft_full(uint16_t color)
{TFT_SEND_CMD(0x2a);  // Column address setTFT_SEND_BYTE(0x00); // start columnTFT_SEND_BYTE(0x00);TFT_SEND_BYTE(0x00); // end columnTFT_SEND_BYTE(0xF0);TFT_SEND_CMD(0x2b);  // Row address setTFT_SEND_BYTE(0x00); // start rowTFT_SEND_BYTE(0x00);TFT_SEND_BYTE(0x01); // end rowTFT_SEND_BYTE(0x40);TFT_SEND_CMD(0x2C);                         // Memory writefor (uint32_t i = 0; i < (320*240*2)/SPI_BUF_LEN; i++){for (uint32_t j = 0; j < SPI_BUF_LEN;j++){/* code */u8TxBuf[j] = color>>8 & 0xff;j++;u8TxBuf[j] = (uint8_t)color;}TFT_SEND_DATA((uint8_t *)u8TxBuf,SPI_BUF_LEN);}
}

六.测试

int32_t main(void)
{/* Peripheral registers write unprotected */LL_PERIPH_WE(EXAMPLE_PERIPH_WE);/* Configure BSP */BSP_CLK_Init();BSP_LED_Init();// BSP_KEY_Init();/* Configure SPI */SPI_Config();/* Peripheral registers write protected */LL_PERIPH_WP(EXAMPLE_PERIPH_WP);tft_init();TFT_BL_1;POWER_1;for (;;) {tft_full(RED);DDL_DelayMS(500U);tft_full(GREEN);DDL_DelayMS(500U);tft_full(BLUE);DDL_DelayMS(500U);}
}

完整项目:
SPI_DMA_TFT.rar

http://www.dtcms.com/wzjs/309985.html

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