diff options
| -rw-r--r-- | bsp/ls1cdev/drivers/drv_spi.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/bsp/ls1cdev/drivers/drv_spi.c b/bsp/ls1cdev/drivers/drv_spi.c index 4e7012dc74..4b81d55d71 100644 --- a/bsp/ls1cdev/drivers/drv_spi.c +++ b/bsp/ls1cdev/drivers/drv_spi.c @@ -19,7 +19,7 @@ * * Change Logs: * Date Author Notes - * 2017-11-02 ��Ϊ�� first version + * 2017-11-02 勤为本 first version * 2018-06-09 zhuangwei add spi0 cs0 support,remove msd_init */ @@ -43,14 +43,14 @@ static rt_err_t configure(struct rt_spi_device *device, struct rt_spi_configurat static rt_uint32_t xfer(struct rt_spi_device *device, struct rt_spi_message *message); -static struct rt_spi_ops ls1c_spi_ops = +static struct rt_spi_ops ls1c_spi_ops = { .configure = configure, .xfer = xfer }; -static rt_err_t configure(struct rt_spi_device *device, +static rt_err_t configure(struct rt_spi_device *device, struct rt_spi_configuration *configuration) { struct rt_spi_bus *spi_bus = NULL; @@ -70,28 +70,28 @@ static rt_err_t configure(struct rt_spi_device *device, spi_base = ls1c_spi_get_base(SPIx); { - // ʹ��SPI��������masterģʽ���ر��ж� + // 使能SPI控制器，master模式，关闭中断 reg_write_8(0x53, spi_base + LS1C_SPI_SPCR_OFFSET); - // ���״̬�Ĵ��� + // 清空状态寄存器 reg_write_8(0xc0, spi_base + LS1C_SPI_SPSR_OFFSET); - // 1�ֽڲ����жϣ�����(��)�뷢��(д)ʱ��ͬʱ + // 1字节产生中断，采样(读)与发送(写)时机同时 reg_write_8(0x03, spi_base + LS1C_SPI_SPER_OFFSET); - // �ر�SPI flash + // 关闭SPI flash val = reg_read_8(spi_base + LS1C_SPI_SFC_PARAM_OFFSET); val &= 0xfe; reg_write_8(val, spi_base + LS1C_SPI_SFC_PARAM_OFFSET); - // spi flashʱ����ƼĴ��� + // spi flash时序控制寄存器 reg_write_8(0x05, spi_base + LS1C_SPI_SFC_TIMING_OFFSET); } - + // baudrate ls1c_spi_set_clock(spi_base, configuration->max_hz); - // ����ͨ��ģʽ(ʱ�Ӽ��Ժ���λ) + // 设置通信模式(时钟极性和相位) if (configuration->mode & RT_SPI_CPOL) // cpol { cpol = SPI_CPOL_1; @@ -116,7 +116,7 @@ static rt_err_t configure(struct rt_spi_device *device, } -static rt_uint32_t xfer(struct rt_spi_device *device, +static rt_uint32_t xfer(struct rt_spi_device *device, struct rt_spi_message *message) { struct rt_spi_bus *spi_bus = NULL; @@ -149,7 +149,7 @@ static rt_uint32_t xfer(struct rt_spi_device *device, ls1c_spi_set_cs(spi_base, cs, 0); } - // �շ����� + // 收发数据 send_ptr = message->send_buf; recv_ptr = message->recv_buf; while (size--) @@ -181,7 +181,7 @@ static rt_uint32_t xfer(struct rt_spi_device *device, #ifdef RT_USING_SPI0 -struct ls1c_spi ls1c_spi0 = +struct ls1c_spi ls1c_spi0 = { .SPIx = LS1C_SPI_0, }; @@ -191,7 +191,7 @@ static struct rt_spi_bus spi0_bus; #ifdef RT_USING_SPI1 -struct ls1c_spi ls1c_spi1 = +struct ls1c_spi ls1c_spi1 = { .SPIx = LS1C_SPI_1, }; @@ -201,10 +201,10 @@ static struct rt_spi_bus spi1_bus; /* - * ��ʼ����ע����о1c��spi���� - * @SPI SPI���ߣ�����LS1C_SPI_0�� LS1C_SPI_1 - * @spi_bus_name �������� - * @ret + * 初始化并注册龙芯1c的spi总线 + * @SPI SPI总线，比如LS1C_SPI_0， LS1C_SPI_1 + * @spi_bus_name 总线名字 + * @ret */ rt_err_t ls1c_spi_bus_register(rt_uint8_t SPI, const char *spi_bus_name) { @@ -237,15 +237,15 @@ int ls1c_hw_spi_init(void) pin_set_purpose(80, PIN_PURPOSE_OTHER); pin_set_purpose(83, PIN_PURPOSE_OTHER);//cs2 - SD card pin_set_purpose(82, PIN_PURPOSE_OTHER);//cs1 - pin_set_purpose(81, PIN_PURPOSE_OTHER);//cs0 - + pin_set_purpose(81, PIN_PURPOSE_OTHER);//cs0 + pin_set_remap(78, PIN_REMAP_DEFAULT); pin_set_remap(79, PIN_REMAP_DEFAULT); pin_set_remap(80, PIN_REMAP_DEFAULT); pin_set_remap(83, PIN_REMAP_DEFAULT);//cs2 - SD card pin_set_remap(82, PIN_REMAP_DEFAULT);//CS1 pin_set_remap(81, PIN_REMAP_DEFAULT);//cs0 - ls1c_spi_bus_register(LS1C_SPI_0,"spi0"); + ls1c_spi_bus_register(LS1C_SPI_0, "spi0"); #endif #ifdef RT_USING_SPI1 @@ -257,7 +257,7 @@ int ls1c_hw_spi_init(void) pin_set_remap(47, PIN_REMAP_THIRD); pin_set_remap(48, PIN_REMAP_THIRD); pin_set_remap(49, PIN_REMAP_THIRD);//CS0 - touch screen - ls1c_spi_bus_register(LS1C_SPI_1,"spi1"); + ls1c_spi_bus_register(LS1C_SPI_1, "spi1"); #endif @@ -265,30 +265,30 @@ int ls1c_hw_spi_init(void) #ifdef RT_USING_SPI0 /* attach cs */ { - static struct rt_spi_device spi_device0; + static struct rt_spi_device spi_device0; static struct rt_spi_device spi_device1; static struct rt_spi_device spi_device2; - static struct ls1c_spi_cs spi_cs0; + static struct ls1c_spi_cs spi_cs0; static struct ls1c_spi_cs spi_cs1; static struct ls1c_spi_cs spi_cs2; /* spi02: CS2 SD Card*/ spi_cs2.cs = LS1C_SPI_CS_2; - rt_spi_bus_attach_device(&spi_device2, "spi02", "spi0", (void*)&spi_cs2); + rt_spi_bus_attach_device(&spi_device2, "spi02", "spi0", (void *)&spi_cs2); spi_cs1.cs = LS1C_SPI_CS_1; - rt_spi_bus_attach_device(&spi_device1, "spi01", "spi0", (void*)&spi_cs1); - spi_cs0.cs = LS1C_SPI_CS_0; - rt_spi_bus_attach_device(&spi_device0, "spi00", "spi0", (void*)&spi_cs0); + rt_spi_bus_attach_device(&spi_device1, "spi01", "spi0", (void *)&spi_cs1); + spi_cs0.cs = LS1C_SPI_CS_0; + rt_spi_bus_attach_device(&spi_device0, "spi00", "spi0", (void *)&spi_cs0); } #endif -#ifdef RT_USING_SPI1 +#ifdef RT_USING_SPI1 { static struct rt_spi_device spi_device; static struct ls1c_spi_cs spi_cs; /* spi10: CS0 Touch*/ spi_cs.cs = LS1C_SPI_CS_0; - rt_spi_bus_attach_device(&spi_device, "spi10", "spi1", (void*)&spi_cs); + rt_spi_bus_attach_device(&spi_device, "spi10", "spi1", (void *)&spi_cs); } #endif } |