116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
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* this notice you can do whatever you want with this stuff. If we meet some day,
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* and you think this stuff is worth it, you can buy me a beer in return.
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* ----------------------------------------------------------------------------
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_system.h"
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#include "driver/spi_master.h"
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#include "soc/gpio_struct.h"
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#include "driver/gpio.h"
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#include "esp_heap_alloc_caps.h"
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#define ADNS_MOSI 19
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#define ADNS_MISO 34ULL
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#define ADNS_CLK 23
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#define ADNS_CS 22
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//#define DELAY() asm("nop; nop; nop; nop;nop; nop; nop; nop;nop; nop; nop; nop;nop; nop; nop; nop;")
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#define DELAY() ets_delay_us(20);
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static void adnsWrite(int adr, int val) {
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int data=((adr|0x80)<<8)|val;
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gpio_set_level(ADNS_CS, 0);
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DELAY();
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for (int mask=0x8000; mask!=0; mask>>=1) {
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gpio_set_level(ADNS_MOSI, (data&mask)?1:0);
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gpio_set_level(ADNS_CLK, 0);
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DELAY();
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gpio_set_level(ADNS_CLK, 1);
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DELAY();
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}
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gpio_set_level(ADNS_CS, 1);
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}
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static int adnsRead(int adr) {
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int data=((adr&0x7F)<<8)|0xff;
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int out=0;
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gpio_set_level(ADNS_CS, 0);
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DELAY();
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for (int mask=0x8000; mask!=0; mask>>=1) {
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gpio_set_level(ADNS_MOSI, (data&mask)?1:0);
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gpio_set_level(ADNS_CLK, 0);
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DELAY();
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if (gpio_get_level(ADNS_MISO)) out|=mask;
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gpio_set_level(ADNS_CLK, 1);
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DELAY();
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}
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gpio_set_level(ADNS_CS, 1);
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DELAY();
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return out&0xff;
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}
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int adns9500_init() {
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volatile int delay;
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int t;
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gpio_config_t gpioconf[2]={
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{
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.pin_bit_mask=(1<<ADNS_MOSI)|(1<<ADNS_CS)|(1<<ADNS_CLK),
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.mode=GPIO_MODE_OUTPUT,
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.pull_up_en=GPIO_PULLUP_DISABLE,
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.pull_down_en=GPIO_PULLDOWN_DISABLE,
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.intr_type=GPIO_PIN_INTR_DISABLE
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},{
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.pin_bit_mask=(1ULL<<ADNS_MISO),
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.mode=GPIO_MODE_INPUT,
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// .pull_up_en=GPIO_PULLUP_ENABLE,
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// .pull_down_en=GPIO_PULLDOWN_DISABLE,
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.intr_type=GPIO_PIN_INTR_DISABLE
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}
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};
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gpio_config(&gpioconf[0]);
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gpio_config(&gpioconf[1]);
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int tout=5;
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int r;
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do {
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adnsWrite(0,0);
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adnsWrite(0x3A,0x5a); //Power-Up Reset
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vTaskDelay(50/portTICK_RATE_MS);
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adnsRead(0x2);
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adnsRead(0x3);
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adnsRead(0x4);
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adnsRead(0x5);
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adnsRead(0x6);
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r=adnsRead(0);
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printf("ADNS: Read %X\n", r);
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tout--;
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} while (r!=0x33 && tout!=0);
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if (tout==0) return 0;
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adnsWrite(0x20, 0); //Main laser turn on !!!
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return 1;
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}
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void adns900_get_dxdybtn(int *x, int *y, int *btn) {
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int16_t sx, sy;
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sx=adnsRead(0x3);
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sx|=adnsRead(0x4)<<8;
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sy=adnsRead(0x5);
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sy|=adnsRead(0x6)<<8;
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ets_delay_us(100);
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*btn=gpio_get_level(ADNS_MISO)?0:1;
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// if (sx!=0 || sy!=0) printf("Mouse: %hd %hd %d\n", sx, sy, *btn);
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*x=sx;
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*y=sy;
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}
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