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Zuletzt aktiv 1 month ago

EFM8 C2 Write Port to Arduino

racerxdl's Avatar Lucas Teske hat die Gist bearbeitet 8 years ago. Zu Änderung gehen

1 file changed, 298 insertions

c2write.ino(Datei erstellt)

@@ -0,0 +1,298 @@
1 + /**
2 + Based on https://github.com/jaromir-sukuba/efm8prog/
3 + Use his SW to program EFM8 using arduino.
4 + This needs some work though (but it works)
5 + **/
6 + #define C2D 2
7 + #define C2CK 3
8 + #define LED 13
9 +
10 + #define INBUSY 0x02
11 + #define OUTREADY 0x01
12 +
13 + void c2_send_bits (unsigned char data, unsigned char len);
14 + void c2_pulse_clk (void);
15 + unsigned char c2_read_bits (unsigned char len);
16 +
17 + void c2_rst (void);
18 + void c2_write_addr (unsigned char addr);
19 + unsigned char c2_read_addr (void);
20 + unsigned char c2_read_data (void);
21 + void c2_write_data (unsigned char addr);
22 +
23 + unsigned char c2_init_PI (void);
24 + unsigned char c2_read_flash_block (unsigned int addr, unsigned char * data, unsigned char len);
25 + unsigned char c2_poll_bit_low (unsigned char mask);
26 + unsigned char c2_poll_bit_high (unsigned char mask);
27 + unsigned char c2_write_flash_block (unsigned int addr, unsigned char * data, unsigned char len);
28 + unsigned char c2_erase_device (void);
29 +
30 +
31 + void c2_rst() {
32 + digitalWrite(C2CK, LOW);
33 + delayMicroseconds(100);
34 + digitalWrite(C2CK, HIGH);
35 + delayMicroseconds(100);
36 + }
37 +
38 + void c2_pulse_clk() {
39 + pinMode(C2CK, OUTPUT);
40 + digitalWrite(C2CK, LOW);
41 + digitalWrite(C2CK, LOW);
42 + digitalWrite(C2CK, LOW);
43 + digitalWrite(C2CK, LOW);
44 + digitalWrite(C2CK, HIGH);
45 + }
46 +
47 + unsigned char c2_read_bits (unsigned char len) {
48 + unsigned char i, data, mask;
49 + mask = 0x01 << (len-1);
50 + data = 0;
51 + pinMode(C2D, INPUT);
52 + for (i=0;i<len;i++) {
53 + c2_pulse_clk();
54 + data = data >> 1;
55 + if (digitalRead(C2D) == HIGH) {
56 + data = data | mask;
57 + }
58 + }
59 + pinMode(C2D, OUTPUT);
60 +
61 + return data;
62 + }
63 +
64 + void c2_send_bits (unsigned char data, unsigned char len) {
65 + unsigned char i;
66 + pinMode(C2D, OUTPUT);
67 + for (i=0;i<len;i++) {
68 + if (data&0x01) {
69 + digitalWrite(C2D, HIGH);
70 + } else {
71 + digitalWrite(C2D, LOW);
72 + }
73 + c2_pulse_clk();
74 + data = data >> 1;
75 + }
76 + }
77 +
78 + void c2_write_data (unsigned char data) {
79 + unsigned char retval;
80 + c2_send_bits(0x0, 1);
81 + c2_send_bits(0x1, 2);
82 + c2_send_bits(0x0, 2);
83 + c2_send_bits(data, 8);
84 + retval = 0;
85 + while (retval == 0) {
86 + retval = c2_read_bits(1);
87 + }
88 + c2_send_bits(0x0, 1);
89 + }
90 +
91 + unsigned char c2_poll_bit_high (unsigned char mask) {
92 + unsigned char retval;
93 + retval = c2_read_addr();
94 + while ((retval&mask)==0) retval = c2_read_addr();
95 + }
96 +
97 + unsigned char c2_poll_bit_low (unsigned char mask) {
98 + unsigned char retval;
99 + retval = c2_read_addr();
100 + while (retval&mask) retval = c2_read_addr();
101 + }
102 +
103 + unsigned char c2_read_flash_block (unsigned int addr, unsigned char * data, unsigned char len) {
104 + unsigned char retval,i;
105 + c2_write_addr(0xB4);
106 + c2_write_data(0x06);
107 + c2_poll_bit_low(INBUSY);
108 + c2_poll_bit_high(OUTREADY);
109 + retval = c2_read_data();
110 + c2_write_data(addr>>8);
111 + c2_poll_bit_low(INBUSY);
112 + c2_write_data(addr&0xFF);
113 + c2_poll_bit_low(INBUSY);
114 + c2_write_data(len);
115 + c2_poll_bit_low(INBUSY);
116 + c2_poll_bit_high(OUTREADY);
117 + retval = c2_read_data();
118 + for (i=0;i<len;i++) {
119 + c2_poll_bit_high(OUTREADY);
120 + retval = c2_read_data();
121 + data[i] = retval;
122 + }
123 + return i;
124 + }
125 +
126 + unsigned char c2_write_flash_block (unsigned int addr, unsigned char * data, unsigned char len) {
127 + unsigned char retval,i;
128 + c2_write_addr(0xB4);
129 + c2_write_data(0x07);
130 + c2_poll_bit_low(INBUSY);
131 + c2_poll_bit_high(OUTREADY);
132 + retval = c2_read_data();
133 + c2_write_data(addr>>8);
134 + c2_poll_bit_low(INBUSY);
135 + c2_write_data(addr&0xFF);
136 + c2_poll_bit_low(INBUSY);
137 + c2_write_data(len);
138 + c2_poll_bit_low(INBUSY);
139 + c2_poll_bit_high(OUTREADY);
140 + retval = c2_read_data();
141 + for (i=0;i<len;i++) {
142 + c2_write_data(data[i] );
143 + c2_poll_bit_low(INBUSY);
144 + }
145 + c2_poll_bit_high(OUTREADY);
146 + }
147 +
148 + unsigned char c2_erase_device (void) {
149 + unsigned char retval;
150 + c2_write_addr(0xB4);
151 + c2_write_data(0x03);
152 + c2_poll_bit_low(INBUSY);
153 + c2_poll_bit_high(OUTREADY);
154 + retval = c2_read_data();
155 + c2_write_data(0xDE);
156 + c2_poll_bit_low(INBUSY);
157 + c2_write_data(0xAD);
158 + c2_poll_bit_low(INBUSY);
159 + c2_write_data(0xA5);
160 + c2_poll_bit_low(INBUSY);
161 + c2_poll_bit_high(OUTREADY);
162 + retval = c2_read_data();
163 + }
164 +
165 + unsigned char c2_init_PI (void) {
166 + c2_rst();
167 + c2_write_addr(0x02);
168 + c2_write_data(0x02);
169 + c2_write_data(0x04);
170 + c2_write_data(0x01);
171 + delay(20);
172 + return 0;
173 + }
174 +
175 + unsigned char c2_read_data() {
176 + unsigned char retval;
177 + c2_send_bits(0x0, 1);
178 + c2_send_bits(0x0, 2);
179 + c2_send_bits(0x0, 2);
180 + retval = 0;
181 + while (retval == 0) {
182 + retval = c2_read_bits(1);
183 + }
184 + retval = c2_read_bits(8);
185 + c2_send_bits(0x0, 1);
186 + return retval;
187 + }
188 +
189 + unsigned char c2_read_addr() {
190 + unsigned char retval;
191 + c2_send_bits(0x0, 1);
192 + c2_send_bits(0x2, 2);
193 + retval = c2_read_bits(8);
194 + c2_send_bits(0x0, 1);
195 + return retval;
196 + }
197 +
198 + void c2_write_addr(unsigned char addr) {
199 + c2_send_bits(0x0,1);
200 + c2_send_bits(0x3,2);
201 + c2_send_bits(addr,8);
202 + c2_send_bits(0x0,1);
203 + }
204 +
205 + void setup() {
206 + Serial.begin(38400);
207 + pinMode(C2CK, OUTPUT);
208 + pinMode(C2D, OUTPUT);
209 + digitalWrite(LED, LOW);
210 + digitalWrite(C2CK, HIGH);
211 + delay(300);
212 + }
213 +
214 + unsigned int i;
215 + unsigned char retval;
216 + unsigned char flash_array[34],flash_array2[34],flash_array3[34];
217 + unsigned char rx_message[250],rx_message_ptr;
218 + unsigned char rx,main_state,bytes_to_receive,rx_state;
219 + unsigned char flash_buffer[130];
220 + unsigned long addr;
221 +
222 + unsigned char rx_state_machine (unsigned char state, unsigned char rx_char) {
223 + if (state==0) {
224 + rx_message_ptr = 0;
225 + rx_message[rx_message_ptr++] = rx_char;
226 + return 1;
227 + }
228 + if (state==1) {
229 + bytes_to_receive = rx_char;
230 + rx_message[rx_message_ptr++] = rx_char;
231 + if (bytes_to_receive==0) return 3;
232 + return 2;
233 + }
234 + if (state==2) {
235 + rx_message[rx_message_ptr++] = rx_char;
236 + bytes_to_receive--;
237 + if (bytes_to_receive==0) return 3;
238 + }
239 + return state;
240 + }
241 +
242 + void loop() {
243 + if (Serial.available()) {
244 + rx = Serial.read();
245 + rx_state = rx_state_machine(rx_state, rx);
246 + if (rx_state == 3) {
247 + switch (rx_message[0]) {
248 + case 0x01:
249 + c2_init_PI();
250 + Serial.write(0x81);
251 + digitalWrite(LED, HIGH);
252 + rx_state = 0;
253 + break;
254 + case 0x02:
255 + c2_rst();
256 + Serial.write(0x82);
257 + digitalWrite(LED, LOW);
258 + rx_state = 0;
259 + break;
260 + case 0x03:
261 + addr = (((unsigned long)(rx_message[3]))<<16) + (((unsigned long)(rx_message[4]))<<8) + (((unsigned long)(rx_message[5]))<<0);
262 + for (i=0;i<rx_message[2];i++) {
263 + flash_buffer[i] = rx_message[i+6];
264 + }
265 + c2_write_flash_block(addr,flash_buffer,rx_message[2]);
266 + Serial.write(0x83);
267 + rx_state = 0;
268 + break;
269 + case 0x04:
270 + c2_erase_device();
271 + Serial.write(0x84);
272 + rx_state = 0;
273 + break;
274 + case 0x05:
275 + Serial.write(0x85);
276 + addr = (((unsigned long)(rx_message[3]))<<16) + (((unsigned long)(rx_message[4]))<<8) + (((unsigned long)(rx_message[5]))<<0);
277 + c2_read_flash_block(addr,flash_buffer,rx_message[2]);
278 + for (i=0;i<rx_message[2];i++) {
279 + Serial.write(flash_buffer[i]);
280 + }
281 + rx_state = 0;
282 + break;
283 + case 0x06:
284 + c2_write_addr(rx_message[3]);
285 + c2_write_data(rx_message[4]);
286 + Serial.write(0x86);
287 + rx_state = 0;
288 + break;
289 + case 0x07:
290 + c2_write_addr(rx_message[3]);
291 + Serial.write(c2_read_data());
292 + Serial.write(0x87);
293 + rx_state = 0;
294 + break;
295 + }
296 + }
297 + }
298 + }
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