From 0940301981dc9fd36efba6a67c5a171ffdf3f8d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=8B=A4=E4=B8=BA=E6=9C=AC?= <1207280597@qq.com> Date: Tue, 18 Jul 2017 11:15:10 +0800 Subject: [PATCH] =?UTF-8?q?=E5=B0=86=E2=80=9C=E9=BE=99=E8=8A=AF1c=E5=BA=93?= =?UTF-8?q?=E2=80=9D=E4=B8=AD=E7=9A=84GPIO=E7=9B=B8=E5=85=B3=E6=8E=A5?= =?UTF-8?q?=E5=8F=A3=E7=A7=BB=E6=A4=8D=E5=88=B0RT-Thread?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- bsp/ls1cdev/drivers/led.c | 40 ++++++ bsp/ls1cdev/drivers/led.h | 27 ++++ bsp/ls1cdev/libraries/SConscript | 10 ++ bsp/ls1cdev/libraries/ls1c_clock.c | 155 +++++++++++++++++++++ bsp/ls1cdev/libraries/ls1c_clock.h | 51 +++++++ bsp/ls1cdev/libraries/ls1c_delay.c | 80 +++++++++++ bsp/ls1cdev/libraries/ls1c_delay.h | 34 +++++ bsp/ls1cdev/libraries/ls1c_gpio.c | 207 ++++++++++++++++++++++++++++ bsp/ls1cdev/libraries/ls1c_gpio.h | 79 +++++++++++ bsp/ls1cdev/libraries/ls1c_pin.c | 143 +++++++++++++++++++ bsp/ls1cdev/libraries/ls1c_pin.h | 43 ++++++ bsp/ls1cdev/libraries/ls1c_public.c | 79 +++++++++++ bsp/ls1cdev/libraries/ls1c_public.h | 78 +++++++++++ bsp/ls1cdev/libraries/ls1c_regs.h | 88 ++++++++++++ 14 files changed, 1114 insertions(+) create mode 100644 bsp/ls1cdev/drivers/led.c create mode 100644 bsp/ls1cdev/drivers/led.h create mode 100644 bsp/ls1cdev/libraries/SConscript create mode 100644 bsp/ls1cdev/libraries/ls1c_clock.c create mode 100644 bsp/ls1cdev/libraries/ls1c_clock.h create mode 100644 bsp/ls1cdev/libraries/ls1c_delay.c create mode 100644 bsp/ls1cdev/libraries/ls1c_delay.h create mode 100644 bsp/ls1cdev/libraries/ls1c_gpio.c create mode 100644 bsp/ls1cdev/libraries/ls1c_gpio.h create mode 100644 bsp/ls1cdev/libraries/ls1c_pin.c create mode 100644 bsp/ls1cdev/libraries/ls1c_pin.h create mode 100644 bsp/ls1cdev/libraries/ls1c_public.c create mode 100644 bsp/ls1cdev/libraries/ls1c_public.h create mode 100644 bsp/ls1cdev/libraries/ls1c_regs.h diff --git a/bsp/ls1cdev/drivers/led.c b/bsp/ls1cdev/drivers/led.c new file mode 100644 index 0000000000..6f73ac9892 --- /dev/null +++ b/bsp/ls1cdev/drivers/led.c @@ -0,0 +1,40 @@ +// led接口 +// 使用低电平点亮led，高电平熄灭led + + +#include "ls1c_gpio.h" + + +// 初始化led +// @led_gpio led所在gpio引脚 +void led_init(unsigned int led_gpio) +{ + gpio_init(led_gpio, gpio_mode_output); + gpio_set(led_gpio, gpio_level_high); // 指示灯默认熄灭 + + return ; +} + + +// 点亮led +// @led_gpio led所在gpio引脚 +void led_on(unsigned int led_gpio) +{ + gpio_set(led_gpio, gpio_level_low); + + return ; +} + + +// 熄灭led +// @led_gpio +void led_off(unsigned int led_gpio) +{ + gpio_set(led_gpio, gpio_level_high); + + return ; +} + + + + diff --git a/bsp/ls1cdev/drivers/led.h b/bsp/ls1cdev/drivers/led.h new file mode 100644 index 0000000000..76ea905371 --- /dev/null +++ b/bsp/ls1cdev/drivers/led.h @@ -0,0 +1,27 @@ +// led接口 +// 使用低电平点亮led，高电平熄灭led + +#ifndef __OPENLOONGSON_LED_H +#define __OPENLOONGSON_LED_H + + +// 初始化led +// @led_gpio led所在gpio引脚 +void led_init(unsigned int led_gpio); + + +// 点亮led +// @led_gpio led所在gpio引脚 +void led_on(unsigned int led_gpio); + + +// 熄灭led +// @led_gpio +void led_off(unsigned int led_gpio); + + + + + +#endif + diff --git a/bsp/ls1cdev/libraries/SConscript b/bsp/ls1cdev/libraries/SConscript new file mode 100644 index 0000000000..78797ef273 --- /dev/null +++ b/bsp/ls1cdev/libraries/SConscript @@ -0,0 +1,10 @@ +from building import * + +cwd = GetCurrentDir() +src = Glob('*.c') + +CPPPATH = [cwd] + +group = DefineGroup('Libraries', src, depend = [''], CPPPATH = CPPPATH) + +Return('group') diff --git a/bsp/ls1cdev/libraries/ls1c_clock.c b/bsp/ls1cdev/libraries/ls1c_clock.c new file mode 100644 index 0000000000..c038651e8d --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_clock.c @@ -0,0 +1,155 @@ +/************************************************************************* + * + * 时钟相关函数 + * + *************************************************************************/ + + +#include "ls1c_regs.h" +#include "ls1c_public.h" + + +// 晶振的频率 +#define AHB_CLK (24000000) +#define APB_CLK (AHB_CLK) + + +// START_FREQ寄存器bits +#define M_PLL_SHIFT (8) +#define M_PLL (0xff << M_PLL_SHIFT) // PLL倍频系数的整数部分 +#define FRAC_N_SHIFT (16) +#define FRAC_N (0xff << FRAC_N_SHIFT) // PLL倍频系数的小数部分 +#define DIV_SDRAM_SHIFT (0) +#define DIV_SDRAM (0x3 << DIV_SDRAM_SHIFT) + +// CLK_DIV_PARAM寄存器bits +#define DIV_PIX_EN (0x1 << 31) +#define DIV_PIX (0x7f << 24) +#define DIV_CAM_EN (0x1 << 23) +#define DIV_CAM (0x7f << 16) +#define DIV_CPU_EN (0x1 << 15) +#define DIV_CPU (0x7f << 8) +#define DIV_PIX_VALID (0x1 << 5) +#define DIV_PIX_SEL (0x1 << 4) +#define DIV_CAM_VALID (0x1 << 3) +#define DIV_CAM_SEL (0x1 << 2) +#define DIV_CPU_VALID (0x1 << 1) +#define DIV_CPU_SEL (0x1 << 0) + +#define DIV_PIX_SHIFT (24) +#define DIV_CAM_SHIFT (16) +#define DIV_CPU_SHIFT (8) + + +/* + * 获取PLL频率 + * @ret PLL频率 + */ +unsigned long clk_get_pll_rate(void) +{ + unsigned int ctrl; + unsigned long pll_rate = 0; + + ctrl = reg_read_32((volatile unsigned int *)LS1C_START_FREQ); + pll_rate = (((ctrl & M_PLL) >> M_PLL_SHIFT) + ((ctrl & FRAC_N) >> FRAC_N_SHIFT)) * APB_CLK / 4; + + return pll_rate; +} + + +/* + * 获取CPU频率 + * @ret CPU频率 + */ +unsigned long clk_get_cpu_rate(void) +{ + unsigned long pll_rate, cpu_rate; + unsigned int ctrl; + + pll_rate = clk_get_pll_rate(); + ctrl = reg_read_32((volatile unsigned int *)LS1C_CLK_DIV_PARAM); + + // 选择时钟来源 + if (DIV_CPU_SEL & ctrl) // pll分频作为时钟信号 + { + if (DIV_CPU_EN & ctrl) + { + cpu_rate = pll_rate / ((ctrl & DIV_CPU) >> DIV_CPU_SHIFT); + } + else + { + cpu_rate = pll_rate / 2; + } + } + else // bypass模式，晶振作为时钟输入 + { + cpu_rate = APB_CLK; + } + + return cpu_rate; +} + + +/* + * 获取DDR频率 + * @ret DDR频率 + */ +unsigned long clk_get_ddr_rate(void) +{ + unsigned long cpu_rate = 0; + unsigned long ddr_rate = 0; + unsigned int ctrl; + + cpu_rate = clk_get_cpu_rate(); + ctrl = reg_read_32((volatile unsigned int *)LS1C_START_FREQ); + ctrl = (ctrl & DIV_SDRAM) >> DIV_SDRAM_SHIFT; + + switch (ctrl) + { + case 0: + ddr_rate = cpu_rate / 2; + break; + + case 1: + ddr_rate = cpu_rate / 4; + break; + + case 2: + case 3: + ddr_rate = cpu_rate / 3; + break; + } + + return ddr_rate; +} + + +/* + * 获取APB频率 + * @ret APB频率 + */ +unsigned long clk_get_apb_rate(void) +{ + return clk_get_ddr_rate(); +} + + +/* + * 获取DC频率 + * @ret DC频率 + */ +unsigned long clk_get_dc_rate(void) +{ + unsigned long pll_rate, dc_rate; + unsigned int ctrl; + + pll_rate = clk_get_pll_rate(); + ctrl = reg_read_32((volatile unsigned int *)LS1C_CLK_DIV_PARAM); + + dc_rate = pll_rate / ((ctrl & DIV_PIX) >> DIV_PIX_SHIFT); + + return dc_rate; +} + + + diff --git a/bsp/ls1cdev/libraries/ls1c_clock.h b/bsp/ls1cdev/libraries/ls1c_clock.h new file mode 100644 index 0000000000..8222350022 --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_clock.h @@ -0,0 +1,51 @@ +/************************************************************************* + * + * 时钟相关头文件 + * + *************************************************************************/ + + +#ifndef __OPENLOONGSON_CLOCK_H +#define __OPENLOONGSON_CLOCK_H + + + +/* + * 获取PLL频率 + * @ret PLL频率 + */ +unsigned long clk_get_pll_rate(void); + + +/* + * 获取CPU频率 + * @ret CPU频率 + */ +unsigned long clk_get_cpu_rate(void); + + + +/* + * 获取DDR频率 + * @ret DDR频率 + */ +unsigned long clk_get_ddr_rate(void); + + +/* + * 获取APB频率 + * @ret APB频率 + */ +unsigned long clk_get_apb_rate(void); + + +/* + * 获取DC频率 + * @ret DC频率 + */ +unsigned long clk_get_dc_rate(void); + + + +#endif + diff --git a/bsp/ls1cdev/libraries/ls1c_delay.c b/bsp/ls1cdev/libraries/ls1c_delay.c new file mode 100644 index 0000000000..214926e58e --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_delay.c @@ -0,0 +1,80 @@ +// 软件延时源文件 + + +#include "ls1c_clock.h" + + + + +/* + * 延时指定时间，单位ms + * @j 延时时间，单位ms + */ +void delay_ms(int j) +{ + int k_max = clk_get_cpu_rate()/1000/3; // 除以1000表示ms，除以3为测试所得的经验(可以理解为最内层循环执行一次需要的时钟个数) + int k = k_max; + + for ( ; j > 0; j--) + { + for (k = k_max; k > 0; k--) + { + __asm__ ("nop"); // 注意，这里必须用内联汇编，否则会被优化掉 + } + } + + return ; +} + + +/* + * 延时指定时间，单位us + * @n 延时时间，单位us + */ +void delay_us(int n) +{ + int count_1us = clk_get_cpu_rate() / 1000000 / 3; // 延时1us的循环次数 + int count_max; // 延时n微秒的循环次数 + int tmp; + + // 根据延时长短微调(注意，这里是手动优化的，cpu频率改变了可能需要重新优化，此时cpu频率为252Mhz) + if (10 >= n) // <=10us + { + count_1us -= 35; + } + else if (100 >= n) // <= 100us + { + count_1us -= 6; + } + else // > 100us + { + count_1us -= 1; + } + count_max = n * count_1us; + + // 延时 + for (tmp = count_max; tmp > 0; tmp--) + { + __asm__ ("nop"); // 注意，这里必须用内联汇编，否则会被优化掉 + } + + return ; +} + + +/* + * 延时指定时间，单位s + * @i 延时时间，单位s + */ +void delay_s(int i) +{ + for ( ; i > 0; i--) + { + delay_ms(1000); + } + + return ; +} + + + diff --git a/bsp/ls1cdev/libraries/ls1c_delay.h b/bsp/ls1cdev/libraries/ls1c_delay.h new file mode 100644 index 0000000000..d6f366de33 --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_delay.h @@ -0,0 +1,34 @@ +// 软件延时头文件 + + + +#ifndef __OPENLOONGSON_DELAY_H +#define __OPENLOONGSON_DELAY_H + + + +/* + * 延时指定时间，单位ms + * @j 延时时间，单位ms + */ +void delay_ms(int j); + + +/* + * 延时指定时间，单位us + * @n 延时时间，单位us + */ +void delay_us(int n); + + +/* + * 延时指定时间，单位s + * @i 延时时间，单位s + */ +void delay_s(int i); + + + + +#endif + diff --git a/bsp/ls1cdev/libraries/ls1c_gpio.c b/bsp/ls1cdev/libraries/ls1c_gpio.c new file mode 100644 index 0000000000..11d696d48e --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_gpio.c @@ -0,0 +1,207 @@ +// 封装gpio接口 + + +#include "ls1c_public.h" +#include "ls1c_regs.h" +#include "ls1c_gpio.h" +#include "ls1c_pin.h" + + +/* + * 获取指定gpio的CFG寄存器 + * @gpio gpio编号 + * @ret CFG寄存器 + */ +volatile unsigned int *gpio_get_cfg_reg(unsigned int gpio) +{ + volatile unsigned int *gpio_cfgx = NULL; // GPIO_CFGx寄存器 + unsigned int port = GPIO_GET_PORT(gpio); + + switch (port) + { + case 0: + gpio_cfgx = (volatile unsigned int *)LS1C_GPIO_CFG0; + break; + + case 1: + gpio_cfgx = (volatile unsigned int *)LS1C_GPIO_CFG1; + break; + + case 2: + gpio_cfgx = (volatile unsigned int *)LS1C_GPIO_CFG2; + break; + + case 3: + gpio_cfgx = (volatile unsigned int *)LS1C_GPIO_CFG3; + break; + + default: + gpio_cfgx = NULL; + break; + } + + return gpio_cfgx; +} + + +/* + * 获取指定gpio的EN寄存器 + * @gpio gpio编号 + * @ret EN寄存器 + */ +volatile unsigned int *gpio_get_en_reg(unsigned int gpio) +{ + volatile unsigned int *gpio_enx = NULL; // GPIO_ENx寄存器 + unsigned int port = GPIO_GET_PORT(gpio); + + switch (port) + { + case 0: + gpio_enx = (volatile unsigned int *)LS1C_GPIO_EN0; + break; + + case 1: + gpio_enx = (volatile unsigned int *)LS1C_GPIO_EN1; + break; + + case 2: + gpio_enx = (volatile unsigned int *)LS1C_GPIO_EN2; + break; + + case 3: + gpio_enx = (volatile unsigned int *)LS1C_GPIO_EN3; + break; + + default: + gpio_enx = NULL; + return gpio_enx; + } + + return gpio_enx; +} + +/* + * gpio初始化 + * @gpio gpio引脚，取值范围[0, 127] + * @mode gpio的工作模式(输入、输出) + * + * 例: 将gpio50初始化为输出 + * gpio_init(50, gpio_mode_output); + */ +void gpio_init(unsigned int gpio, gpio_mode_t mode) +{ + volatile unsigned int *gpio_enx = NULL; // GPIO_ENx寄存器 + unsigned int pin = GPIO_GET_PIN(gpio); + + // 将pin设为普通GPIO + pin_set_purpose(gpio, PIN_PURPOSE_GPIO); + + // 设置gpio工作模式(输入、输出) + gpio_enx = gpio_get_en_reg(gpio); + if (gpio_mode_output == mode) // 输出 + { + reg_clr_one_bit(gpio_enx, pin); + } + else // 输入 + { + reg_set_one_bit(gpio_enx, pin); + } + + return ; +} + + +/* + * 在指定gpio输出高电平或低电平 + * @gpio gpio引脚，取值范围[0, 127] + * @level 电平值 + * + * 例: 在gpio50上输出低电平 + * gpio_set(50, gpio_level_low); + */ +void gpio_set(unsigned int gpio, gpio_level_t level) +{ + volatile unsigned int *gpio_outx = NULL; // GPIO_OUTx寄存器 + unsigned int port = GPIO_GET_PORT(gpio); + unsigned int pin = GPIO_GET_PIN(gpio); + + // 获取寄存器地址 + switch (port) + { + case 0: + gpio_outx = (volatile unsigned int *)LS1C_GPIO_OUT0; + break; + + case 1: + gpio_outx = (volatile unsigned int *)LS1C_GPIO_OUT1; + break; + + case 2: + gpio_outx = (volatile unsigned int *)LS1C_GPIO_OUT2; + break; + + case 3: + gpio_outx = (volatile unsigned int *)LS1C_GPIO_OUT3; + break; + + default: // 正确的程序不应该走到这里，直接返回 + return ; + } + + // 输出 + if (gpio_level_low == level) + { + reg_clr_one_bit(gpio_outx, pin); + } + else + { + reg_set_one_bit(gpio_outx, pin); + } + + return ; +} + + +/* + * 读取指定gpio引脚的值 + * @gpio gpio引脚，取值范围[0,127] + * + * 例: 读取gpio50引脚上的值 + * gpio_level_t level; + * level = gpio_get(50); + */ +unsigned int gpio_get(unsigned int gpio) +{ + volatile unsigned int *gpio_inx = NULL; // GPIO_INx寄存器 + unsigned int port = GPIO_GET_PORT(gpio); + unsigned int pin = GPIO_GET_PIN(gpio); + + // 获取寄存器地址 + switch (port) + { + case 0: + gpio_inx = (volatile unsigned int *)LS1C_GPIO_IN0; + break; + + case 1: + gpio_inx = (volatile unsigned int *)LS1C_GPIO_IN1; + break; + + case 2: + gpio_inx = (volatile unsigned int *)LS1C_GPIO_IN2; + break; + + case 3: + gpio_inx = (volatile unsigned int *)LS1C_GPIO_IN3; + break; + + default: // 正常的流程不应该走到这里，直接返回 + return 0; + } + + // 读取 + return reg_get_bit(gpio_inx, pin); +} + + + diff --git a/bsp/ls1cdev/libraries/ls1c_gpio.h b/bsp/ls1cdev/libraries/ls1c_gpio.h new file mode 100644 index 0000000000..d20085cf4a --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_gpio.h @@ -0,0 +1,79 @@ + + +#ifndef __OPENLOONGSON_GPIO_H +#define __OPENLOONGSON_GPIO_H + + + +// 龙芯1c的gpio是按照0,1,2,3,4...这样的顺序编号的， +// 但在操作寄存器的时候，又是按照每32个一组来分的 +// 这里利用这个特性，将每组的32个gpio叫做一个"port"，每个gpio在每组中的索引叫"pin" +// port = gpio / 32 +// pin = gpio % 32 +// 例如GPIO50，port=1,pin=18 +#define GPIO_GET_PORT(gpio) ((gpio) / 32) +#define GPIO_GET_PIN(gpio) ((gpio) % 32) + + +// gpio的工作模式--输入、输出 +typedef enum{ + gpio_mode_output = 0, // 输出 + gpio_mode_input = 1 // 输入 +}gpio_mode_t; + + +// gpio高低电平值 +typedef enum{ + gpio_level_low = 0, // 低电平 + gpio_level_high = 1 // 高电平 +}gpio_level_t; + + + + +/* + * 获取指定gpio的CFG寄存器 + * @gpio gpio编号 + * @ret CFG寄存器 + */ +volatile unsigned int *gpio_get_cfg_reg(unsigned int gpio); + +/* + * gpio初始化 + * @gpio gpio引脚，取值范围[0, 127] + * @mode gpio的工作模式(输入、输出) + * + * 例: 将gpio50初始化为输出 + * gpio_init(50, gpio_mode_output); + */ +void gpio_init(unsigned int gpio, gpio_mode_t mode); + + +/* + * 在指定gpio输出高电平或低电平 + * @gpio gpio引脚，取值范围[0, 127] + * @level 电平值 + * + * 例: 在gpio50上输出低电平 + * gpio_set(50, gpio_level_low); + */ +void gpio_set(unsigned int gpio, gpio_level_t level); + + + +/* + * 读取指定gpio引脚的值 + * @gpio gpio引脚，取值范围[0,127] + * + * 例: 读取gpio50引脚上的值 + * gpio_level_t level; + * level = gpio_get(50); + */ +unsigned int gpio_get(unsigned int gpio); + + + + + +#endif + diff --git a/bsp/ls1cdev/libraries/ls1c_pin.c b/bsp/ls1cdev/libraries/ls1c_pin.c new file mode 100644 index 0000000000..2dd71d79b1 --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_pin.c @@ -0,0 +1,143 @@ +// 引脚功能(普通gpio，pwm，复用等)相关接口 + + +#include "ls1c_public.h" +#include "ls1c_regs.h" +#include "ls1c_gpio.h" +#include "ls1c_pin.h" + + +/* + * 把指定pin设置为指定用途(普通gpio，非gpio) + * @gpio gpio引脚编号 + * @purpose 用途 + */ +void pin_set_purpose(unsigned int gpio, pin_purpose_t purpose) +{ + volatile unsigned int *gpio_cfgx; // GPIO_CFGx寄存器 + unsigned int pin = GPIO_GET_PIN(gpio); + + gpio_cfgx = gpio_get_cfg_reg(gpio); + if (PIN_PURPOSE_GPIO == purpose) // 引脚用作普通gpio + { + reg_set_one_bit(gpio_cfgx, pin); + } + else // 引脚用作其它功能(非gpio) + { + reg_clr_one_bit(gpio_cfgx, pin); + } + + return ; +} + + + +/* + * 设置指定pin为第n复用 + * @gpio gpio编号 + * @remap 第n复用 + */ +void pin_set_remap(unsigned int gpio, pin_remap_t remap) +{ + volatile unsigned int *reg = NULL; // 复用寄存器 + unsigned int port = GPIO_GET_PORT(gpio); + unsigned int pin = GPIO_GET_PIN(gpio); + + switch (port) + { + case 0: + switch (remap) + { + case PIN_REMAP_FIRST: + reg = (volatile unsigned int *)LS1C_CBUS_FIRST0; + break; + case PIN_REMAP_SECOND: + reg = (volatile unsigned int *)LS1C_CBUS_SECOND0; + break; + case PIN_REMAP_THIRD: + reg = (volatile unsigned int *)LS1C_CBUS_THIRD0; + break; + case PIN_REMAP_FOURTH: + reg = (volatile unsigned int *)LS1C_CBUS_FOURTH0; + break; + case PIN_REMAP_FIFTH: + reg = (volatile unsigned int *)LS1C_CBUS_FIFTH0; + break; + } + break; + + case 1: + switch (remap) + { + case PIN_REMAP_FIRST: + reg = (volatile unsigned int *)LS1C_CBUS_FIRST1; + break; + case PIN_REMAP_SECOND: + reg = (volatile unsigned int *)LS1C_CBUS_SECOND1; + break; + case PIN_REMAP_THIRD: + reg = (volatile unsigned int *)LS1C_CBUS_THIRD1; + break; + case PIN_REMAP_FOURTH: + reg = (volatile unsigned int *)LS1C_CBUS_FOURTH1; + break; + case PIN_REMAP_FIFTH: + reg = (volatile unsigned int *)LS1C_CBUS_FIFTH1; + break; + } + break; + + case 2: + switch (remap) + { + case PIN_REMAP_FIRST: + reg = (volatile unsigned int *)LS1C_CBUS_FIRST2; + break; + case PIN_REMAP_SECOND: + reg = (volatile unsigned int *)LS1C_CBUS_SECOND2; + break; + case PIN_REMAP_THIRD: + reg = (volatile unsigned int *)LS1C_CBUS_THIRD2; + break; + case PIN_REMAP_FOURTH: + reg = (volatile unsigned int *)LS1C_CBUS_FOURTH2; + break; + case PIN_REMAP_FIFTH: + reg = (volatile unsigned int *)LS1C_CBUS_FIFTH2; + break; + } + break; + + case 3: + switch (remap) + { + case PIN_REMAP_FIRST: + reg = (volatile unsigned int *)LS1C_CBUS_FIRST3; + break; + case PIN_REMAP_SECOND: + reg = (volatile unsigned int *)LS1C_CBUS_SECOND3; + break; + case PIN_REMAP_THIRD: + reg = (volatile unsigned int *)LS1C_CBUS_THIRD3; + break; + case PIN_REMAP_FOURTH: + reg = (volatile unsigned int *)LS1C_CBUS_FOURTH3; + break; + case PIN_REMAP_FIFTH: + reg = (volatile unsigned int *)LS1C_CBUS_FIFTH3; + break; + } + break; + + default: + return ; + } + + // 置1 + reg_set_one_bit(reg, pin); + + return ; +} + + + diff --git a/bsp/ls1cdev/libraries/ls1c_pin.h b/bsp/ls1cdev/libraries/ls1c_pin.h new file mode 100644 index 0000000000..ca8ef31585 --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_pin.h @@ -0,0 +1,43 @@ +// 引脚功能(普通gpio，pwm，复用等)相关接口 + +#ifndef __OPENLOONGSON_PIN_H +#define __OPENLOONGSON_PIN_H + + +// 引脚用途 +typedef enum +{ + PIN_PURPOSE_GPIO = 0, // 引脚用作普通gpio + PIN_PURPOSE_OTHER, // 引脚用作其它功能(非gpio) +}pin_purpose_t; + + +// 引脚复用 +typedef enum +{ + PIN_REMAP_FIRST = 0, // 第一复用 + PIN_REMAP_SECOND, // 第二复用 + PIN_REMAP_THIRD, // 第三复用 + PIN_REMAP_FOURTH, // 第四复用 + PIN_REMAP_FIFTH, // 第五复用 +}pin_remap_t; + + +/* + * 把指定pin设置为指定用途(普通gpio，非gpio) + * @gpio gpio引脚编号 + * @purpose 用途 + */ +void pin_set_purpose(unsigned int gpio, pin_purpose_t purpose); + + +/* + * 设置指定pin为第n复用 + * @gpio gpio编号 + * @remap 第n复用 + */ +void pin_set_remap(unsigned int gpio, pin_remap_t remap); + + +#endif + diff --git a/bsp/ls1cdev/libraries/ls1c_public.c b/bsp/ls1cdev/libraries/ls1c_public.c new file mode 100644 index 0000000000..652fd2e219 --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_public.c @@ -0,0 +1,79 @@ +// 一些常用的、共用的接口 + +/* + * 将指定寄存器的指定位置1 + * @reg 寄存器地址 + * @bit 需要置1的那一bit + */ +void reg_set_one_bit(volatile unsigned int *reg, unsigned int bit) +{ + unsigned int temp, mask; + + mask = 1 << bit; + temp = *reg; + temp |= mask; + *reg = temp; + + return ; +} + + +/* + * 将指定寄存器的指定位清零 + * @reg 寄存器地址 + * @bit 需要清零的那一bit + */ +void reg_clr_one_bit(volatile unsigned int *reg, unsigned int bit) +{ + unsigned int temp, mask; + + mask = 1 << bit; + temp = *reg; + temp &= ~mask; + *reg = temp; + + return ; +} + + + +/* + * 获取指定寄存器的指定位的值 + * @reg 寄存器地址 + * @bit 需要读取值的那一bit + * @ret 指定位的值 + */ +unsigned int reg_get_bit(volatile unsigned int *reg, unsigned int bit) +{ + unsigned int temp; + + temp = *reg; + temp = (temp >> bit) & 1; + + return temp; +} + + +/* + * 向寄存器中写一个32bit的数据 + * @data 待写入的数据 + * @addr 寄存器地址 + */ +void reg_write_32(unsigned int data, volatile unsigned int *addr) +{ + *addr = data; +} + + +/* + * 从寄存器读出一个32bit数据 + * @addr 寄存器地址 + * @ret 读出的数据 + */ +unsigned int reg_read_32(volatile unsigned int *addr) +{ + return (*addr); +} + + + diff --git a/bsp/ls1cdev/libraries/ls1c_public.h b/bsp/ls1cdev/libraries/ls1c_public.h new file mode 100644 index 0000000000..d3b410c421 --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_public.h @@ -0,0 +1,78 @@ +// 一些常用的、共用的接口 + +#ifndef __OPENLOONGSON_PUBLIC_H +#define __OPENLOONGSON_PUBLIC_H + + +#include + + +// pmon提供的打印函数，见main()函数 +struct callvectors { + int (*open) (char *, int, int); + int (*close) (int); + int (*read) (int, void *, int); + int (*write) (int, void *, int); + long long (*lseek) (int, long long, int); + int (*printf) (const char *, ...); + void (*cacheflush) (void); + char *(*gets) (char *); +}; +#define myprintf (*callvec->printf) +#define mygets (*callvec->gets) +extern struct callvectors *callvec; + + +#define MIN(a, b) ((a) > (b) ? (b) : (a)) +#define MAX(a, b) ((a) > (b) ? (a) : (b)) + +typedef enum +{ + FALSE=0, + TRUE=1 +}BOOL; + +/* + * 将指定寄存器的指定位置1 + * @reg 寄存器地址 + * @bit 需要置1的那一bit + */ +void reg_set_one_bit(volatile unsigned int *reg, unsigned int bit); + + +/* + * 将指定寄存器的指定位清零 + * @reg 寄存器地址 + * @bit 需要清零的那一bit + */ +void reg_clr_one_bit(volatile unsigned int *reg, unsigned int bit); + + +/* + * 获取指定寄存器的指定位的值 + * @reg 寄存器地址 + * @bit 需要读取值的那一bit + * @ret 指定位的值 + */ +unsigned int reg_get_bit(volatile unsigned int *reg, unsigned int bit); + + +/* + * 向寄存器中写一个32bit的数据 + * @data 待写入的数据 + * @addr 寄存器地址 + */ +void reg_write_32(unsigned int data, volatile unsigned int *addr); + + +/* + * 从寄存器读出一个32bit数据 + * @addr 寄存器地址 + * @ret 读出的数据 + */ +unsigned int reg_read_32(volatile unsigned int *addr); + + + +#endif + diff --git a/bsp/ls1cdev/libraries/ls1c_regs.h b/bsp/ls1cdev/libraries/ls1c_regs.h new file mode 100644 index 0000000000..22ac433fda --- /dev/null +++ b/bsp/ls1cdev/libraries/ls1c_regs.h @@ -0,0 +1,88 @@ +// 龙芯1c外设寄存器 + + +#ifndef __OPENLOONGSON_LS1C_REGS_H +#define __OPENLOONGSON_LS1C_REGS_H + + + + +// 时钟相关寄存器地址 +#define LS1C_START_FREQ (0xbfe78030) +#define LS1C_CLK_DIV_PARAM (0xbfe78034) + + +// gpio相关寄存器地址 +#define LS1C_GPIO_CFG0 (0xbfd010c0) +#define LS1C_GPIO_EN0 (0xbfd010d0) +#define LS1C_GPIO_IN0 (0xbfd010e0) +#define LS1C_GPIO_OUT0 (0xbfd010f0) + +#define LS1C_GPIO_CFG1 (0xbfd010c4) +#define LS1C_GPIO_EN1 (0xbfd010d4) +#define LS1C_GPIO_IN1 (0xbfd010e4) +#define LS1C_GPIO_OUT1 (0xbfd010f4) + +#define LS1C_GPIO_CFG2 (0xbfd010c8) +#define LS1C_GPIO_EN2 (0xbfd010d8) +#define LS1C_GPIO_IN2 (0xbfd010e8) +#define LS1C_GPIO_OUT2 (0xbfd010f8) + +#define LS1C_GPIO_CFG3 (0xbfd010cc) +#define LS1C_GPIO_EN3 (0xbfd010dc) +#define LS1C_GPIO_IN3 (0xbfd010ec) +#define LS1C_GPIO_OUT3 (0xbfd010fc) + + + +// 复用相关寄存器 +#define LS1C_CBUS_FIRST0 (0xbfd011c0) +#define LS1C_CBUS_SECOND0 (0xbfd011d0) +#define LS1C_CBUS_THIRD0 (0xbfd011e0) +#define LS1C_CBUS_FOURTH0 (0xbfd011f0) +#define LS1C_CBUS_FIFTH0 (0xbfd01200) + +#define LS1C_CBUS_FIRST1 (0xbfd011c4) +#define LS1C_CBUS_SECOND1 (0xbfd011d4) +#define LS1C_CBUS_THIRD1 (0xbfd011e4) +#define LS1C_CBUS_FOURTH1 (0xbfd011f4) +#define LS1C_CBUS_FIFTH1 (0xbfd01204) + +#define LS1C_CBUS_FIRST2 (0xbfd011c8) +#define LS1C_CBUS_SECOND2 (0xbfd011d8) +#define LS1C_CBUS_THIRD2 (0xbfd011e8) +#define LS1C_CBUS_FOURTH2 (0xbfd011f8) +#define LS1C_CBUS_FIFTH2 (0xbfd01208) + +#define LS1C_CBUS_FIRST3 (0xbfd011cc) +#define LS1C_CBUS_SECOND3 (0xbfd011dc) +#define LS1C_CBUS_THIRD3 (0xbfd011ec) +#define LS1C_CBUS_FOURTH3 (0xbfd011fc) +#define LS1C_CBUS_FIFTH3 (0xbfd0120c) + + +// PWM寄存器偏移 +#define LS1C_PWM_CNTR (0x0) +#define LS1C_PWM_HRC (0x4) +#define LS1C_PWM_LRC (0x8) +#define LS1C_PWM_CTRL (0xC) +// PWM基地址 +#define LS1C_REG_BASE_PWM0 (0xbfe5c000) +#define LS1C_REG_BASE_PWM1 (0xbfe5c010) +#define LS1C_REG_BASE_PWM2 (0xbfe5c020) +#define LS1C_REG_BASE_PWM3 (0xbfe5c030) + + + + + + + + + + + + + +#endif + -- GitLab