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DV Display: External I2C interface option

dv_stick
Mike Bell 2023-06-27 18:34:14 +01:00 zatwierdzone przez Phil Howard
rodzic de4aaa80b6
commit 4b57162c06
2 zmienionych plików z 41 dodań i 31 usunięć
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26
drivers/dv_display/dv_display.cpp
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@ -81,10 +81,10 @@ namespace pimoroni {
mp_printf(&mp_plat_print, "Start I2C\n");
if (res_mode != 0xFF) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_SET_RES, res_mode);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_SET_RES, res_mode);
}
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_START, 1);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_START, 1);
mp_printf(&mp_plat_print, "Started\n");
}
@ -111,18 +111,18 @@ namespace pimoroni {
}
uint8_t DVDisplay::get_gpio() {
return i2c.reg_read_uint8(I2C_ADDR, I2C_REG_GPIO);
return i2c->reg_read_uint8(I2C_ADDR, I2C_REG_GPIO);
}
uint8_t DVDisplay::get_gpio_hi() {
return i2c.reg_read_uint8(I2C_ADDR, I2C_REG_GPIO_HI);
return i2c->reg_read_uint8(I2C_ADDR, I2C_REG_GPIO_HI);
}
void DVDisplay::i2c_modify_bit(uint8_t reg, uint bit, bool enable) {
uint8_t val = i2c.reg_read_uint8(I2C_ADDR, reg);
uint8_t val = i2c->reg_read_uint8(I2C_ADDR, reg);
if (enable) val |= 1u << bit;
else val &= ~(1u << bit);
i2c.reg_write_uint8(I2C_ADDR, reg, val);
i2c->reg_write_uint8(I2C_ADDR, reg, val);
}
void DVDisplay::set_gpio_hi_dir(uint pin, bool output) {
@ -130,7 +130,7 @@ namespace pimoroni {
}
void DVDisplay::set_gpio_hi_dir_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_OE, val);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_OE, val);
}
void DVDisplay::set_gpio_hi(uint pin, bool on) {
@ -138,7 +138,7 @@ namespace pimoroni {
}
void DVDisplay::set_gpio_hi_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_OUT, val);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_OUT, val);
}
void DVDisplay::set_gpio_hi_pull_up(uint pin, bool on) {
@ -146,7 +146,7 @@ namespace pimoroni {
}
void DVDisplay::set_gpio_hi_pull_up_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_PULL_UP, val);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_PULL_UP, val);
}
void DVDisplay::set_gpio_hi_pull_down(uint pin, bool on) {
@ -154,19 +154,19 @@ namespace pimoroni {
}
void DVDisplay::set_gpio_hi_pull_down_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_PULL_DOWN, val);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_PULL_DOWN, val);
}
void DVDisplay::set_led_level(uint8_t level) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_LED, level | 0x80);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_LED, level | 0x80);
}
void DVDisplay::set_led_heartbeat() {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_LED, 2);
i2c->reg_write_uint8(I2C_ADDR, I2C_REG_LED, 2);
}
void DVDisplay::get_edid(uint8_t* edid) {
i2c.read_bytes(I2C_ADDR, I2C_REG_EDID, edid, 128);
i2c->read_bytes(I2C_ADDR, I2C_REG_EDID, edid, 128);
}
void DVDisplay::write(uint32_t address, size_t len, const uint16_t colour)

46
drivers/dv_display/dv_display.hpp
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@ -25,25 +25,11 @@ namespace pimoroni {
MODE_RGB888 = 3,
};
//--------------------------------------------------
// Variables
//--------------------------------------------------
protected:
// Ram accessed through the APS6404 driver
APS6404 ram;
// I2C interface to driver
I2C i2c;
// interface pins
static constexpr uint CS = 17;
static constexpr uint D0 = 19;
static constexpr uint VSYNC = 16;
static constexpr uint RAM_SEL = 8;
// I2C pins
static constexpr uint I2C_SDA = 6;
static constexpr uint I2C_SCL = 7;
// I2C
// I2C address and registers
static constexpr uint I2C_ADDR = 0x0D;
static constexpr uint I2C_REG_SET_RES = 0xF8;
static constexpr uint I2C_REG_START = 0xF9;
@ -55,6 +41,22 @@ namespace pimoroni {
static constexpr uint I2C_REG_GPIO_HI_PULL_UP = 0xCB;
static constexpr uint I2C_REG_GPIO_HI_PULL_DOWN = 0xCC;
static constexpr uint I2C_REG_EDID = 0xED;
//--------------------------------------------------
// Variables
//--------------------------------------------------
protected:
// Ram accessed through the APS6404 driver
APS6404 ram;
// I2C interface to driver
I2C* i2c;
// interface pins
static constexpr uint CS = 17;
static constexpr uint D0 = 19;
static constexpr uint VSYNC = 16;
static constexpr uint RAM_SEL = 8;
static constexpr uint32_t base_address = 0x10000;
uint16_t width = 0;
@ -71,8 +73,16 @@ namespace pimoroni {
// Note resolutions on the second line require quite extreme overclocking and may not work on all hardware.
// Either or both of the horizontal or vertical component of any resolution may be halved.
DVDisplay(uint16_t width, uint16_t height, Mode mode = MODE_RGB555)
: ram(CS, D0)
, i2c(I2C_SDA, I2C_SCL)
: ram(CS, D0, pio0)
, i2c(new I2C(I2C_SDA, I2C_SCL))
, width(width), height(height)
, mode(mode)
, pixel_buffer_location(-1, -1)
{}
DVDisplay(uint16_t width, uint16_t height, I2C* i2c, Mode mode = MODE_RGB555)
: ram(CS, D0, pio0)
, i2c(i2c)
, width(width), height(height)
, mode(mode)
, pixel_buffer_location(-1, -1)