Bubble display example using NXP PCAL9555A GPIO expander
Fork of PCAL9555_Hello by
main.cpp@3:f74f521b2e46, 2017-02-18 (annotated)
- Committer:
- MACRUM
- Date:
- Sat Feb 18 15:37:34 2017 +0000
- Revision:
- 3:f74f521b2e46
- Parent:
- 2:ae0b95d42407
- Child:
- 4:0f3b252fb13f
Bubble display example using I2C expander
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MACRUM | 3:f74f521b2e46 | 1 | #pragma Ospace |
MACRUM | 3:f74f521b2e46 | 2 | |
nxp_ip | 1:15df36975a85 | 3 | #include "mbed.h" |
MACRUM | 2:ae0b95d42407 | 4 | |
MACRUM | 2:ae0b95d42407 | 5 | #if 1 |
MACRUM | 2:ae0b95d42407 | 6 | |
MACRUM | 2:ae0b95d42407 | 7 | #ifdef USE_LIB |
nxp_ip | 1:15df36975a85 | 8 | #include "PCAL9555.h" |
MACRUM | 2:ae0b95d42407 | 9 | #endif |
MACRUM | 2:ae0b95d42407 | 10 | |
MACRUM | 2:ae0b95d42407 | 11 | #if defined(TARGET_LPC81X) |
MACRUM | 2:ae0b95d42407 | 12 | //PCAL9555 gpio_exp(P0_10, P0_11); |
MACRUM | 3:f74f521b2e46 | 13 | I2C gpio_exp(dp4, dp3); |
MACRUM | 2:ae0b95d42407 | 14 | #else |
MACRUM | 2:ae0b95d42407 | 15 | //PCAL9555 gpio_exp(SDA, SCL); |
MACRUM | 2:ae0b95d42407 | 16 | I2C gpio_exp(SDA, SCL); |
MACRUM | 2:ae0b95d42407 | 17 | #endif |
MACRUM | 2:ae0b95d42407 | 18 | |
MACRUM | 2:ae0b95d42407 | 19 | //Serial pc(USBTX, USBRX); |
MACRUM | 2:ae0b95d42407 | 20 | Ticker tick; |
MACRUM | 2:ae0b95d42407 | 21 | |
MACRUM | 3:f74f521b2e46 | 22 | static int _seg; |
MACRUM | 2:ae0b95d42407 | 23 | static int _chrs[4]; |
MACRUM | 2:ae0b95d42407 | 24 | |
MACRUM | 2:ae0b95d42407 | 25 | const char dispTabl[] = { |
MACRUM | 2:ae0b95d42407 | 26 | 0x7E, // 0 |
MACRUM | 2:ae0b95d42407 | 27 | 0x30, // 1 |
MACRUM | 2:ae0b95d42407 | 28 | 0x6D, // 2 |
MACRUM | 2:ae0b95d42407 | 29 | 0x79, // 3 |
MACRUM | 2:ae0b95d42407 | 30 | 0x33, // 4 |
MACRUM | 2:ae0b95d42407 | 31 | 0x5B, // 5 |
MACRUM | 2:ae0b95d42407 | 32 | 0x5F, // 6 |
MACRUM | 2:ae0b95d42407 | 33 | 0x70, // 7 |
MACRUM | 2:ae0b95d42407 | 34 | 0x7F, // 8 |
MACRUM | 2:ae0b95d42407 | 35 | 0x7B, // 9 |
MACRUM | 2:ae0b95d42407 | 36 | }; |
MACRUM | 2:ae0b95d42407 | 37 | |
MACRUM | 2:ae0b95d42407 | 38 | void update() |
MACRUM | 2:ae0b95d42407 | 39 | { |
MACRUM | 2:ae0b95d42407 | 40 | int port_0; |
MACRUM | 2:ae0b95d42407 | 41 | int _data; |
MACRUM | 2:ae0b95d42407 | 42 | |
MACRUM | 2:ae0b95d42407 | 43 | _data = (dispTabl[_chrs[_seg]]); |
nxp_ip | 0:26310705044b | 44 | |
MACRUM | 2:ae0b95d42407 | 45 | switch(_seg) { |
MACRUM | 2:ae0b95d42407 | 46 | case 0: |
MACRUM | 2:ae0b95d42407 | 47 | port_0 = 0x70; |
MACRUM | 2:ae0b95d42407 | 48 | _seg = 1; |
MACRUM | 2:ae0b95d42407 | 49 | break; |
MACRUM | 2:ae0b95d42407 | 50 | case 1: |
MACRUM | 2:ae0b95d42407 | 51 | port_0 = 0xb0; |
MACRUM | 2:ae0b95d42407 | 52 | _seg = 2; |
MACRUM | 2:ae0b95d42407 | 53 | break; |
MACRUM | 2:ae0b95d42407 | 54 | case 2: |
MACRUM | 2:ae0b95d42407 | 55 | port_0 = 0xd0; |
MACRUM | 2:ae0b95d42407 | 56 | _seg = 3; |
MACRUM | 2:ae0b95d42407 | 57 | break; |
MACRUM | 2:ae0b95d42407 | 58 | case 3: |
MACRUM | 2:ae0b95d42407 | 59 | port_0 = 0xe0; |
MACRUM | 2:ae0b95d42407 | 60 | _seg = 0; |
MACRUM | 2:ae0b95d42407 | 61 | break; |
MACRUM | 3:f74f521b2e46 | 62 | } |
MACRUM | 2:ae0b95d42407 | 63 | |
MACRUM | 2:ae0b95d42407 | 64 | #ifdef USE_LIB |
MACRUM | 2:ae0b95d42407 | 65 | gpio_exp.write( (_data << 8) | port_0 ); |
MACRUM | 2:ae0b95d42407 | 66 | #else |
MACRUM | 2:ae0b95d42407 | 67 | char buf[3]; |
MACRUM | 2:ae0b95d42407 | 68 | buf[0] = 2; // OUTPUT |
MACRUM | 2:ae0b95d42407 | 69 | buf[1] = port_0; |
MACRUM | 2:ae0b95d42407 | 70 | buf[2] = _data; // output |
MACRUM | 2:ae0b95d42407 | 71 | gpio_exp.write(0x40, buf, 3); |
MACRUM | 2:ae0b95d42407 | 72 | #endif |
MACRUM | 2:ae0b95d42407 | 73 | } |
MACRUM | 2:ae0b95d42407 | 74 | |
MACRUM | 2:ae0b95d42407 | 75 | void write_number(int num) |
MACRUM | 2:ae0b95d42407 | 76 | { |
MACRUM | 2:ae0b95d42407 | 77 | num %= 10000; |
MACRUM | 2:ae0b95d42407 | 78 | _chrs[0] = (num/1000); |
MACRUM | 2:ae0b95d42407 | 79 | _chrs[1] = ((num/100)%10); |
MACRUM | 2:ae0b95d42407 | 80 | _chrs[2] = (((num/10)%100)%10); |
MACRUM | 2:ae0b95d42407 | 81 | _chrs[3] = (((num%1000)%100)%10); |
MACRUM | 2:ae0b95d42407 | 82 | } |
MACRUM | 2:ae0b95d42407 | 83 | |
MACRUM | 2:ae0b95d42407 | 84 | int main() |
MACRUM | 2:ae0b95d42407 | 85 | { |
MACRUM | 3:f74f521b2e46 | 86 | _seg = 0; |
MACRUM | 3:f74f521b2e46 | 87 | |
MACRUM | 2:ae0b95d42407 | 88 | #ifdef USE_LIB |
MACRUM | 3:f74f521b2e46 | 89 | gpio_exp.configure(0x0000); // Set all pins: output |
MACRUM | 2:ae0b95d42407 | 90 | #else |
MACRUM | 2:ae0b95d42407 | 91 | char buf[3]; |
MACRUM | 2:ae0b95d42407 | 92 | buf[0] = 0x06; // CONFIG |
MACRUM | 2:ae0b95d42407 | 93 | buf[1] = 0; // output |
MACRUM | 2:ae0b95d42407 | 94 | buf[2] = 0; // output |
MACRUM | 2:ae0b95d42407 | 95 | gpio_exp.write(0x40, buf, 3); |
MACRUM | 2:ae0b95d42407 | 96 | #endif |
MACRUM | 2:ae0b95d42407 | 97 | |
MACRUM | 2:ae0b95d42407 | 98 | tick.attach(&update, 0.005); // 5msec |
MACRUM | 2:ae0b95d42407 | 99 | |
MACRUM | 2:ae0b95d42407 | 100 | //pc.printf("PCAL9555 test program\n"); |
MACRUM | 2:ae0b95d42407 | 101 | |
MACRUM | 2:ae0b95d42407 | 102 | int cnt = 0; |
MACRUM | 2:ae0b95d42407 | 103 | while(1) { |
MACRUM | 2:ae0b95d42407 | 104 | write_number(cnt++); |
MACRUM | 2:ae0b95d42407 | 105 | wait(0.1); |
nxp_ip | 0:26310705044b | 106 | } |
nxp_ip | 0:26310705044b | 107 | } |
MACRUM | 2:ae0b95d42407 | 108 | |
MACRUM | 2:ae0b95d42407 | 109 | void error(const char* format, ...) { |
MACRUM | 2:ae0b95d42407 | 110 | } |
MACRUM | 2:ae0b95d42407 | 111 | |
MACRUM | 2:ae0b95d42407 | 112 | #else |
MACRUM | 2:ae0b95d42407 | 113 | |
MACRUM | 2:ae0b95d42407 | 114 | DigitalOut led(LED1); |
MACRUM | 2:ae0b95d42407 | 115 | |
MACRUM | 2:ae0b95d42407 | 116 | int main() |
MACRUM | 2:ae0b95d42407 | 117 | { |
MACRUM | 2:ae0b95d42407 | 118 | printf("hello\n"); |
MACRUM | 2:ae0b95d42407 | 119 | |
MACRUM | 2:ae0b95d42407 | 120 | while(1) { |
MACRUM | 2:ae0b95d42407 | 121 | led = !led; |
MACRUM | 2:ae0b95d42407 | 122 | wait(0.3); |
MACRUM | 2:ae0b95d42407 | 123 | } |
MACRUM | 2:ae0b95d42407 | 124 | } |
MACRUM | 2:ae0b95d42407 | 125 | |
MACRUM | 2:ae0b95d42407 | 126 | #endif |