1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/semphr.h>
// #include <freertos/heap_regions.h>
#include <esp_system.h>
#include <esp_log.h>
#include <esp_err.h>
#include <esp_heap_caps.h>
#include <driver/gpio.h>
#include <driver/spi_slave.h>
#include "eos.h"
#include "msgq.h"
#include "net.h"
#define SPI_GPIO_RTS 22
#define SPI_GPIO_CTS 21
#define SPI_GPIO_MOSI 23
#define SPI_GPIO_MISO 19
#define SPI_GPIO_SCLK 18
#define SPI_GPIO_CS 5
static EOSBufQ net_buf_q;
static unsigned char *net_bufq_array[EOS_NET_SIZE_BUFQ];
static EOSMsgQ net_send_q;
static EOSMsgItem net_sndq_array[EOS_NET_SIZE_SNDQ];
static SemaphoreHandle_t mutex;
static SemaphoreHandle_t semaph;
static const char *TAG = "EOS NET";
static eos_net_fptr_t mtype_handler[EOS_NET_MAX_MTYPE];
static void bad_handler(unsigned char mtype, unsigned char *buffer, uint16_t len) {
ESP_LOGE(TAG, "NET RECV: bad handler: %d", mtype);
}
static void net_xchg_task(void *pvParameters) {
int repeat = 0;
unsigned char mtype = 0;
unsigned char *buffer;
uint16_t len;
uint8_t flags;
unsigned char *buf_send = heap_caps_malloc(EOS_NET_SIZE_BUF, MALLOC_CAP_DMA);
unsigned char *buf_recv = heap_caps_malloc(EOS_NET_SIZE_BUF, MALLOC_CAP_DMA);
spi_slave_transaction_t t;
memset(&t, 0, sizeof(t));
t.length = EOS_NET_SIZE_BUF*8;
t.tx_buffer = buf_send;
t.rx_buffer = buf_recv;
for (;;) {
if (!repeat) {
xSemaphoreTake(mutex, portMAX_DELAY);
eos_msgq_pop(&net_send_q, &mtype, &buffer, &len, &flags);
if (mtype) {
buf_send[0] = ((mtype << 3) | (len >> 8)) & 0xFF;
buf_send[1] = len & 0xFF;
if (buffer) {
memcpy(buf_send + 2, buffer, len);
if (flags & EOS_NET_FLAG_BFREE) {
free(buffer);
} else {
eos_bufq_push(&net_buf_q, buffer);
xSemaphoreGive(semaph);
}
}
} else {
WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_RTS));
buf_send[0] = 0;
buf_send[1] = 0;
}
xSemaphoreGive(mutex);
}
memset(buf_recv, 0, EOS_NET_SIZE_BUF);
spi_slave_transmit(HSPI_HOST, &t, portMAX_DELAY);
// ESP_LOGI(TAG, "RECV:%d", (buf_recv[0] >> 3));
repeat = 0;
if (buf_recv[0] != 0) {
mtype = (buf_recv[0] >> 3);
len = ((buf_recv[0] & 0x07) << 8);
len |= buf_recv[1];
buffer = buf_recv + 2;
if (mtype & EOS_NET_MTYPE_FLAG_ONEW) {
mtype &= ~EOS_NET_MTYPE_FLAG_ONEW;
if (buf_send[0]) repeat = 1;
}
if (mtype <= EOS_NET_MAX_MTYPE) {
mtype_handler[mtype-1](mtype, buffer, len);
} else {
bad_handler(mtype, buffer, len);
}
}
}
}
// Called after a transaction is queued and ready for pickup by master. We use this to set the handshake line high.
static void _post_setup_cb(spi_slave_transaction_t *trans) {
WRITE_PERI_REG(GPIO_OUT_W1TS_REG, (1 << SPI_GPIO_CTS));
}
// Called after transaction is sent/received. We use this to set the handshake line low.
static void _post_trans_cb(spi_slave_transaction_t *trans) {
WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_CTS));
}
void eos_net_init(void) {
int i;
esp_err_t ret;
// Configuration for the handshake lines
gpio_config_t io_conf;
io_conf.intr_type = GPIO_INTR_DISABLE;
io_conf.mode = GPIO_MODE_OUTPUT;
io_conf.pin_bit_mask = (1 << SPI_GPIO_CTS);
gpio_config(&io_conf);
WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_CTS));
io_conf.intr_type = GPIO_INTR_DISABLE;
io_conf.mode = GPIO_MODE_OUTPUT;
io_conf.pin_bit_mask = (1 << SPI_GPIO_RTS);
gpio_config(&io_conf);
WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_RTS));
//Configuration for the SPI bus
spi_bus_config_t buscfg = {
.mosi_io_num = SPI_GPIO_MOSI,
.miso_io_num = SPI_GPIO_MISO,
.sclk_io_num = SPI_GPIO_SCLK
};
//Configuration for the SPI slave interface
spi_slave_interface_config_t slvcfg = {
.mode = 0,
.spics_io_num = SPI_GPIO_CS,
.queue_size = 2,
.flags = 0,
.post_setup_cb = _post_setup_cb,
.post_trans_cb = _post_trans_cb
};
//Initialize SPI slave interface
ret=spi_slave_initialize(HSPI_HOST, &buscfg, &slvcfg, 1);
assert(ret==ESP_OK);
eos_msgq_init(&net_send_q, net_sndq_array, EOS_NET_SIZE_SNDQ);
eos_bufq_init(&net_buf_q, net_bufq_array, EOS_NET_SIZE_BUFQ);
for (i=0; i<EOS_NET_SIZE_BUFQ; i++) {
eos_bufq_push(&net_buf_q, malloc(EOS_NET_SIZE_BUF));
}
for (i=0; i<EOS_NET_MAX_MTYPE; i++) {
mtype_handler[i] = bad_handler;
}
semaph = xSemaphoreCreateCounting(EOS_NET_SIZE_BUFQ, EOS_NET_SIZE_BUFQ);
mutex = xSemaphoreCreateBinary();
xSemaphoreGive(mutex);
xTaskCreate(&net_xchg_task, "net_xchg", EOS_TASK_SSIZE_NET_XCHG, NULL, EOS_TASK_PRIORITY_NET_XCHG, NULL);
ESP_LOGI(TAG, "INIT");
}
unsigned char *eos_net_alloc(void) {
unsigned char *ret;
xSemaphoreTake(semaph, portMAX_DELAY);
xSemaphoreTake(mutex, portMAX_DELAY);
ret = eos_bufq_pop(&net_buf_q);
xSemaphoreGive(mutex);
return ret;
}
void eos_net_free(unsigned char *buf) {
xSemaphoreTake(mutex, portMAX_DELAY);
eos_bufq_push(&net_buf_q, buf);
xSemaphoreGive(semaph);
xSemaphoreGive(mutex);
}
int eos_net_send(unsigned char mtype, unsigned char *buffer, uint16_t len, uint8_t flags) {
int rv;
if (flags & EOS_NET_FLAG_BCOPY) xSemaphoreTake(semaph, portMAX_DELAY);
xSemaphoreTake(mutex, portMAX_DELAY);
WRITE_PERI_REG(GPIO_OUT_W1TS_REG, (1 << SPI_GPIO_RTS));
if (flags & EOS_NET_FLAG_BCOPY) {
unsigned char *b = eos_bufq_pop(&net_buf_q);
memcpy(b, buffer, len);
buffer = b;
}
rv = eos_msgq_push(&net_send_q, mtype, buffer, len, flags);
xSemaphoreGive(mutex);
return rv;
}
void eos_net_set_handler(unsigned char mtype, eos_net_fptr_t handler) {
mtype_handler[mtype-1] = handler;
}
|
