Bubble display example using NXP PCAL9555A GPIO expander
Fork of PCAL9555_Hello by
main.cpp@2:ae0b95d42407, 2017-02-18 (annotated)
- Committer:
- MACRUM
- Date:
- Sat Feb 18 12:54:01 2017 +0000
- Revision:
- 2:ae0b95d42407
- Parent:
- 1:15df36975a85
- Child:
- 3:f74f521b2e46
Initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
nxp_ip | 1:15df36975a85 | 1 | #include "mbed.h" |
MACRUM | 2:ae0b95d42407 | 2 | |
MACRUM | 2:ae0b95d42407 | 3 | #if 1 |
MACRUM | 2:ae0b95d42407 | 4 | |
MACRUM | 2:ae0b95d42407 | 5 | #ifdef USE_LIB |
nxp_ip | 1:15df36975a85 | 6 | #include "PCAL9555.h" |
MACRUM | 2:ae0b95d42407 | 7 | #endif |
MACRUM | 2:ae0b95d42407 | 8 | |
MACRUM | 2:ae0b95d42407 | 9 | #if defined(TARGET_LPC81X) |
MACRUM | 2:ae0b95d42407 | 10 | //PCAL9555 gpio_exp(P0_10, P0_11); |
MACRUM | 2:ae0b95d42407 | 11 | I2C gpio_exp(P0_10, P0_11); |
MACRUM | 2:ae0b95d42407 | 12 | #else |
MACRUM | 2:ae0b95d42407 | 13 | //PCAL9555 gpio_exp(SDA, SCL); |
MACRUM | 2:ae0b95d42407 | 14 | I2C gpio_exp(SDA, SCL); |
MACRUM | 2:ae0b95d42407 | 15 | #endif |
MACRUM | 2:ae0b95d42407 | 16 | |
MACRUM | 2:ae0b95d42407 | 17 | //Serial pc(USBTX, USBRX); |
MACRUM | 2:ae0b95d42407 | 18 | Ticker tick; |
MACRUM | 2:ae0b95d42407 | 19 | |
MACRUM | 2:ae0b95d42407 | 20 | static int _seg = 0; |
MACRUM | 2:ae0b95d42407 | 21 | static int _chrs[4]; |
MACRUM | 2:ae0b95d42407 | 22 | |
MACRUM | 2:ae0b95d42407 | 23 | const char dispTabl[] = { |
MACRUM | 2:ae0b95d42407 | 24 | 0x7E, // 0 |
MACRUM | 2:ae0b95d42407 | 25 | 0x30, // 1 |
MACRUM | 2:ae0b95d42407 | 26 | 0x6D, // 2 |
MACRUM | 2:ae0b95d42407 | 27 | 0x79, // 3 |
MACRUM | 2:ae0b95d42407 | 28 | 0x33, // 4 |
MACRUM | 2:ae0b95d42407 | 29 | 0x5B, // 5 |
MACRUM | 2:ae0b95d42407 | 30 | 0x5F, // 6 |
MACRUM | 2:ae0b95d42407 | 31 | 0x70, // 7 |
MACRUM | 2:ae0b95d42407 | 32 | 0x7F, // 8 |
MACRUM | 2:ae0b95d42407 | 33 | 0x7B, // 9 |
MACRUM | 2:ae0b95d42407 | 34 | }; |
MACRUM | 2:ae0b95d42407 | 35 | |
MACRUM | 2:ae0b95d42407 | 36 | void update() |
MACRUM | 2:ae0b95d42407 | 37 | { |
MACRUM | 2:ae0b95d42407 | 38 | int port_0; |
MACRUM | 2:ae0b95d42407 | 39 | int _data; |
MACRUM | 2:ae0b95d42407 | 40 | |
MACRUM | 2:ae0b95d42407 | 41 | _data = (dispTabl[_chrs[_seg]]); |
nxp_ip | 0:26310705044b | 42 | |
MACRUM | 2:ae0b95d42407 | 43 | switch(_seg) { |
MACRUM | 2:ae0b95d42407 | 44 | case 0: |
MACRUM | 2:ae0b95d42407 | 45 | port_0 = 0x70; |
MACRUM | 2:ae0b95d42407 | 46 | _seg = 1; |
MACRUM | 2:ae0b95d42407 | 47 | break; |
MACRUM | 2:ae0b95d42407 | 48 | case 1: |
MACRUM | 2:ae0b95d42407 | 49 | port_0 = 0xb0; |
MACRUM | 2:ae0b95d42407 | 50 | _seg = 2; |
MACRUM | 2:ae0b95d42407 | 51 | break; |
MACRUM | 2:ae0b95d42407 | 52 | case 2: |
MACRUM | 2:ae0b95d42407 | 53 | port_0 = 0xd0; |
MACRUM | 2:ae0b95d42407 | 54 | _seg = 3; |
MACRUM | 2:ae0b95d42407 | 55 | break; |
MACRUM | 2:ae0b95d42407 | 56 | case 3: |
MACRUM | 2:ae0b95d42407 | 57 | port_0 = 0xe0; |
MACRUM | 2:ae0b95d42407 | 58 | _seg = 0; |
MACRUM | 2:ae0b95d42407 | 59 | break; |
MACRUM | 2:ae0b95d42407 | 60 | |
MACRUM | 2:ae0b95d42407 | 61 | } |
MACRUM | 2:ae0b95d42407 | 62 | #ifdef USE_LIB |
MACRUM | 2:ae0b95d42407 | 63 | gpio_exp.write( (_data << 8) | port_0 ); |
MACRUM | 2:ae0b95d42407 | 64 | #else |
MACRUM | 2:ae0b95d42407 | 65 | char buf[3]; |
MACRUM | 2:ae0b95d42407 | 66 | buf[0] = 2; // OUTPUT |
MACRUM | 2:ae0b95d42407 | 67 | buf[1] = port_0; |
MACRUM | 2:ae0b95d42407 | 68 | buf[2] = _data; // output |
MACRUM | 2:ae0b95d42407 | 69 | gpio_exp.write(0x40, buf, 3); |
MACRUM | 2:ae0b95d42407 | 70 | #endif |
MACRUM | 2:ae0b95d42407 | 71 | } |
MACRUM | 2:ae0b95d42407 | 72 | |
MACRUM | 2:ae0b95d42407 | 73 | void write_number(int num) |
MACRUM | 2:ae0b95d42407 | 74 | { |
MACRUM | 2:ae0b95d42407 | 75 | num %= 10000; |
MACRUM | 2:ae0b95d42407 | 76 | _chrs[0] = (num/1000); |
MACRUM | 2:ae0b95d42407 | 77 | _chrs[1] = ((num/100)%10); |
MACRUM | 2:ae0b95d42407 | 78 | _chrs[2] = (((num/10)%100)%10); |
MACRUM | 2:ae0b95d42407 | 79 | _chrs[3] = (((num%1000)%100)%10); |
MACRUM | 2:ae0b95d42407 | 80 | } |
MACRUM | 2:ae0b95d42407 | 81 | |
MACRUM | 2:ae0b95d42407 | 82 | int main() |
MACRUM | 2:ae0b95d42407 | 83 | { |
MACRUM | 2:ae0b95d42407 | 84 | #ifdef USE_LIB |
MACRUM | 2:ae0b95d42407 | 85 | gpio_exp.configure( 0x0000 ); // Set all pins: output |
MACRUM | 2:ae0b95d42407 | 86 | #else |
MACRUM | 2:ae0b95d42407 | 87 | char buf[3]; |
MACRUM | 2:ae0b95d42407 | 88 | buf[0] = 0x06; // CONFIG |
MACRUM | 2:ae0b95d42407 | 89 | buf[1] = 0; // output |
MACRUM | 2:ae0b95d42407 | 90 | buf[2] = 0; // output |
MACRUM | 2:ae0b95d42407 | 91 | gpio_exp.write(0x40, buf, 3); |
MACRUM | 2:ae0b95d42407 | 92 | #endif |
MACRUM | 2:ae0b95d42407 | 93 | |
MACRUM | 2:ae0b95d42407 | 94 | tick.attach(&update, 0.005); // 5msec |
MACRUM | 2:ae0b95d42407 | 95 | |
MACRUM | 2:ae0b95d42407 | 96 | //pc.printf("PCAL9555 test program\n"); |
MACRUM | 2:ae0b95d42407 | 97 | |
MACRUM | 2:ae0b95d42407 | 98 | int cnt = 0; |
MACRUM | 2:ae0b95d42407 | 99 | while(1) { |
MACRUM | 2:ae0b95d42407 | 100 | write_number(cnt++); |
MACRUM | 2:ae0b95d42407 | 101 | wait(0.1); |
nxp_ip | 0:26310705044b | 102 | } |
nxp_ip | 0:26310705044b | 103 | } |
MACRUM | 2:ae0b95d42407 | 104 | |
MACRUM | 2:ae0b95d42407 | 105 | void error(const char* format, ...) { |
MACRUM | 2:ae0b95d42407 | 106 | } |
MACRUM | 2:ae0b95d42407 | 107 | |
MACRUM | 2:ae0b95d42407 | 108 | #else |
MACRUM | 2:ae0b95d42407 | 109 | |
MACRUM | 2:ae0b95d42407 | 110 | DigitalOut led(LED1); |
MACRUM | 2:ae0b95d42407 | 111 | |
MACRUM | 2:ae0b95d42407 | 112 | int main() |
MACRUM | 2:ae0b95d42407 | 113 | { |
MACRUM | 2:ae0b95d42407 | 114 | printf("hello\n"); |
MACRUM | 2:ae0b95d42407 | 115 | |
MACRUM | 2:ae0b95d42407 | 116 | while(1) { |
MACRUM | 2:ae0b95d42407 | 117 | led = !led; |
MACRUM | 2:ae0b95d42407 | 118 | wait(0.3); |
MACRUM | 2:ae0b95d42407 | 119 | } |
MACRUM | 2:ae0b95d42407 | 120 | } |
MACRUM | 2:ae0b95d42407 | 121 | |
MACRUM | 2:ae0b95d42407 | 122 | #endif |